Fix: Remove duplicate database refresh logic (Fabric). Add logging for collection fetching. (#2426)

* Remove duplicate database refresh logic. Add logging for collection fetching

* fix: Fix unit test

* fix: Update snapshots to include databasesRefreshed property

---------

Co-authored-by: Laurent Nguyen <languye@microsoft.com>

src/Explorer/Controls/Settings/__snapshots__/SettingsComponent.test.tsx.snap

@@ -110,6 +110,7 @@ exports[`SettingsComponent renders 1`] = `
                 "conflictResolutionPolicy": [Function],
                 "container": Explorer {
                   "_isInitializingNotebooks": false,
+                  "databasesRefreshed": Promise {},
                   "isFixedCollectionWithSharedThroughputSupported": [Function],
                   "isTabsContentExpanded": [Function],
                   "onRefreshDatabasesKeyPress": [Function],
@@ -231,6 +232,7 @@ exports[`SettingsComponent renders 1`] = `
                 "conflictResolutionPolicy": [Function],
                 "container": Explorer {
                   "_isInitializingNotebooks": false,
+                  "databasesRefreshed": Promise {},
                   "isFixedCollectionWithSharedThroughputSupported": [Function],
                   "isTabsContentExpanded": [Function],
                   "onRefreshDatabasesKeyPress": [Function],
@@ -453,6 +455,7 @@ exports[`SettingsComponent renders 1`] = `
                 "conflictResolutionPolicy": [Function],
                 "container": Explorer {
                   "_isInitializingNotebooks": false,
+                  "databasesRefreshed": Promise {},
                   "isFixedCollectionWithSharedThroughputSupported": [Function],
                   "isTabsContentExpanded": [Function],
                   "onRefreshDatabasesKeyPress": [Function],
@@ -524,6 +527,7 @@ exports[`SettingsComponent renders 1`] = `
             explorer={
               Explorer {
                 "_isInitializingNotebooks": false,
+                "databasesRefreshed": Promise {},
                 "isFixedCollectionWithSharedThroughputSupported": [Function],
                 "isTabsContentExpanded": [Function],
                 "onRefreshDatabasesKeyPress": [Function],
@@ -692,6 +696,7 @@ exports[`SettingsComponent renders 1`] = `
                 "conflictResolutionPolicy": [Function],
                 "container": Explorer {
                   "_isInitializingNotebooks": false,
+                  "databasesRefreshed": Promise {},
                   "isFixedCollectionWithSharedThroughputSupported": [Function],
                   "isTabsContentExpanded": [Function],
                   "onRefreshDatabasesKeyPress": [Function],
@@ -763,6 +768,7 @@ exports[`SettingsComponent renders 1`] = `
             explorer={
               Explorer {
                 "_isInitializingNotebooks": false,
+                "databasesRefreshed": Promise {},
                 "isFixedCollectionWithSharedThroughputSupported": [Function],
                 "isTabsContentExpanded": [Function],
                 "onRefreshDatabasesKeyPress": [Function],

src/Explorer/Explorer.tsx

@@ -107,6 +107,12 @@ export default class Explorer {
 
   private static readonly MaxNbDatabasesToAutoExpand = 5;
   public phoenixClient: PhoenixClient;
+
+  /**
+   * Resolves when the initial refreshAllDatabases (including collection loading) completes.
+   * Await this instead of calling refreshAllDatabases again to avoid duplicate concurrent loads.
+   */
+  public databasesRefreshed: Promise<void> = Promise.resolve();
   constructor() {
     const startKey: number = TelemetryProcessor.traceStart(Action.InitializeDataExplorer, {
       dataExplorerArea: Constants.Areas.ResourceTree,
@@ -1197,9 +1203,11 @@ export default class Explorer {
     }
 
     if (userContext.apiType !== "Postgres" && userContext.apiType !== "VCoreMongo") {
-      userContext.authType === AuthType.ResourceToken
-        ? this.refreshDatabaseForResourceToken()
-        : await this.refreshAllDatabases(); // await: we rely on the databases to be loaded before restoring the tabs further in the flow
+      this.databasesRefreshed =
+        userContext.authType === AuthType.ResourceToken
+          ? this.refreshDatabaseForResourceToken()
+          : this.refreshAllDatabases();
+      await this.databasesRefreshed; // await: we rely on the databases to be loaded before restoring the tabs further in the flow
     }
 
     if (!isFabricNative()) {

src/Explorer/Panes/AddGlobalSecondaryIndexPanel/__snapshots__/AddGlobalSecondaryIndexPanel.test.tsx.snap

@@ -146,6 +146,7 @@ exports[`AddGlobalSecondaryIndexPanel render default panel 1`] = `
         explorer={
           Explorer {
             "_isInitializingNotebooks": false,
+            "databasesRefreshed": Promise {},
             "isFixedCollectionWithSharedThroughputSupported": [Function],
             "isTabsContentExpanded": [Function],
             "onRefreshDatabasesKeyPress": [Function],

src/Explorer/Panes/GitHubReposPanel/__snapshots__/GitHubReposPanel.test.tsx.snap

@@ -18,6 +18,7 @@ exports[`GitHub Repos Panel should render Default properly 1`] = `
         {
           "container": Explorer {
             "_isInitializingNotebooks": false,
+            "databasesRefreshed": Promise {},
             "isFixedCollectionWithSharedThroughputSupported": [Function],
             "isTabsContentExpanded": [Function],
             "onRefreshDatabasesKeyPress": [Function],

src/Explorer/Panes/StringInputPane/__snapshots__/StringInputPane.test.tsx.snap

@@ -8,6 +8,7 @@ exports[`StringInput Pane should render Create new directory properly 1`] = `
   explorer={
     Explorer {
       "_isInitializingNotebooks": false,
+      "databasesRefreshed": Promise {},
       "isFixedCollectionWithSharedThroughputSupported": [Function],
       "isTabsContentExpanded": [Function],
       "onRefreshDatabasesKeyPress": [Function],