Fix webviews stealing focus when not last focused (#98847)

Fixes #61489
Co-authored-by: NMatt Bierner <matb@microsoft.com>

src/vs/workbench/contrib/webview/browser/webviewEditor.ts

@@ -19,6 +19,7 @@ import { WebviewInput } from 'vs/workbench/contrib/webview/browser/webviewEditor
 import { IEditorGroup } from 'vs/workbench/services/editor/common/editorGroupsService';
 import { IEditorService } from 'vs/workbench/services/editor/common/editorService';
 import { IHostService } from 'vs/workbench/services/host/browser/host';
+import { IWorkbenchLayoutService, Parts } from 'vs/workbench/services/layout/browser/layoutService';
 
 export class WebviewEditor extends BaseEditor {
 
@@ -39,6 +40,8 @@ export class WebviewEditor extends BaseEditor {
 		@IThemeService themeService: IThemeService,
 		@IStorageService storageService: IStorageService,
 		@IEditorService private readonly _editorService: IEditorService,
+		@IWorkbenchLayoutService private readonly _workbenchLayoutService: IWorkbenchLayoutService,
+		@IEditorGroupsService private readonly _editorGroupsService: IEditorGroupsService,
 		@IEditorDropService private readonly _editorDropService: IEditorDropService,
 		@IHostService private readonly _hostService: IHostService,
 	) {
@@ -76,7 +79,7 @@ export class WebviewEditor extends BaseEditor {
 		if (!this._onFocusWindowHandler.value && !isWeb) {
 			// Make sure we restore focus when switching back to a VS Code window
 			this._onFocusWindowHandler.value = this._hostService.onDidChangeFocus(focused => {
-				if (focused && this._editorService.activeEditorPane === this) {
+				if (focused && this._editorService.activeEditorPane === this && this._workbenchLayoutService.hasFocus(Parts.EDITOR_PART)) {
 					this.focus();
 				}
 			});