hide ghost text when invoking IE session (microsoft#180682)

https://github.com/microsoft/vscode-internalbacklog/issues/3573

Author: jrieken

src/vs/editor/contrib/inlineCompletions/browser/inlineCompletionsController.ts

@@ -215,4 +215,10 @@ export class InlineCompletionsController extends Disposable {
 	public shouldShowHoverAtViewZone(viewZoneId: string): boolean {
 		return this.ghostTextWidget.ownsViewZone(viewZoneId);
 	}
+
+	hide() {
+		transaction(tx => {
+			this?.model.get()?.stop(tx);
+		});
+	}
 }

src/vs/workbench/contrib/interactiveEditor/browser/interactiveEditorController.ts

@@ -31,6 +31,7 @@ import { ModelDecorationOptions, createTextBufferFactoryFromSnapshot } from 'vs/
 import { IEditorWorkerService } from 'vs/editor/common/services/editorWorker';
 import { ILanguageFeaturesService } from 'vs/editor/common/services/languageFeatures';
 import { IModelService } from 'vs/editor/common/services/model';
+import { InlineCompletionsController } from 'vs/editor/contrib/inlineCompletions/browser/inlineCompletionsController';
 import { localize } from 'vs/nls';
 import { IConfigurationService } from 'vs/platform/configuration/common/configuration';
 import { IContextKey, IContextKeyService } from 'vs/platform/contextkey/common/contextkey';
@@ -334,6 +335,9 @@ export class InteractiveEditorController implements IEditorContribution {
 
 	async run(options: InteractiveEditorRunOptions | undefined): Promise<void> {
 
+		// hide/cancel inline completions when invoking IE
+		InlineCompletionsController.get(this._editor)?.hide();
+
 		const editMode = this._getMode();
 
 		this._ctsSession.dispose(true);