Prepare for Fabric native (#2050)

* Implement fabric native path

* Fix default values to work with current fabric clients

* Fix Fabric native mode

* Fix unit test

* export Fabric context

* Dynamically close Home tab for Mirrored databases in Fabric rather than conditional init (which doesn't work for Native)

* For Fabric native, don't show "Delete Database" in context menu and reading databases should return the database from the context.

* Update to V3 messaging

* For data plane operations, skip ARM for Fabric native. Refine the tests for fabric to make the distinction between mirrored key, mirrored AAD and native. Fix FabricUtil to strict compile.

* Add support for refreshing access tokens

* Buf fix: don't wait for refresh is async

* Fix format

* Fix strict compile issue

---------

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

src/Utils/WindowUtils.ts

@@ -1,3 +1,4 @@
+import { isFabric } from "Platform/Fabric/FabricUtil";
 import { Platform, configContext } from "./../ConfigContext";
 
 export const getDataExplorerWindow = (currentWindow: Window): Window | undefined => {
@@ -7,7 +8,7 @@ export const getDataExplorerWindow = (currentWindow: Window): Window | undefined
       if (currentWindow.parent === currentWindow) {
         return undefined;
       }
-      if (configContext.platform === Platform.Fabric && currentWindow.parent.parent === currentWindow.top) {
+      if (isFabric() && currentWindow.parent.parent === currentWindow.top) {
         // in Fabric data explorer is inside an extension iframe, so we have two parent iframes
         return currentWindow;
       }