Enabled the ability to close the home tab (#1765)

src/Explorer/Menus/CommandBar/CommandBarComponentButtonFactory.tsx

@@ -1,3 +1,4 @@
+import { ReactTabKind, useTabs } from "hooks/useTabs";
 import * as React from "react";
 import AddCollectionIcon from "../../../../images/AddCollection.svg";
 import AddDatabaseIcon from "../../../../images/AddDatabase.svg";
@@ -8,6 +9,7 @@ import AddUdfIcon from "../../../../images/AddUdf.svg";
 import BrowseQueriesIcon from "../../../../images/BrowseQuery.svg";
 import CosmosTerminalIcon from "../../../../images/Cosmos-Terminal.svg";
 import FeedbackIcon from "../../../../images/Feedback-Command.svg";
+import HomeIcon from "../../../../images/Home_16.svg";
 import HostedTerminalIcon from "../../../../images/Hosted-Terminal.svg";
 import OpenQueryFromDiskIcon from "../../../../images/OpenQueryFromDisk.svg";
 import GitHubIcon from "../../../../images/github.svg";
@@ -56,6 +58,9 @@ export function createStaticCommandBarButtons(
     }
   };
 
+  const homeBtn = createHomeButton();
+  buttons.push(homeBtn);
+
   if (configContext.platform !== Platform.Fabric) {
     const newCollectionBtn = createNewCollectionGroup(container);
     buttons.push(newCollectionBtn);
@@ -285,6 +290,18 @@ function createNewCollectionGroup(container: Explorer): CommandButtonComponentPr
   };
 }
 
+function createHomeButton(): CommandButtonComponentProps {
+  const label = "Home";
+  return {
+    iconSrc: HomeIcon,
+    iconAlt: label,
+    onCommandClick: () => useTabs.getState().openAndActivateReactTab(ReactTabKind.Home),
+    commandButtonLabel: label,
+    hasPopup: false,
+    ariaLabel: label,
+  };
+}
+
 function createOpenSynapseLinkDialogButton(container: Explorer): CommandButtonComponentProps {
   if (configContext.platform === Platform.Emulator) {
     return undefined;