fix: don't render editor hint with chat widget (microsoft#194351)

Author: joyceerhl

src/vs/workbench/contrib/codeEditor/browser/emptyTextEditorHint/emptyTextEditorHint.ts

@@ -66,7 +66,7 @@ export class EmptyTextEditorHintContribution implements IEditorContribution {
 		@ICommandService private readonly commandService: ICommandService,
 		@IConfigurationService protected readonly configurationService: IConfigurationService,
 		@IKeybindingService private readonly keybindingService: IKeybindingService,
-		@IInlineChatSessionService inlineChatSessionService: IInlineChatSessionService,
+		@IInlineChatSessionService private readonly inlineChatSessionService: IInlineChatSessionService,
 		@IInlineChatService protected readonly inlineChatService: IInlineChatService,
 		@ITelemetryService private readonly telemetryService: ITelemetryService,
 		@IProductService protected readonly productService: IProductService,
@@ -108,6 +108,10 @@ export class EmptyTextEditorHintContribution implements IEditorContribution {
 			return false;
 		}
 
+		if (this.inlineChatSessionService.getSession(this.editor, model.uri)) {
+			return false;
+		}
+
 		const conflictingDecoration = this.editor.getLineDecorations(1)?.find((d) =>
 			d.options.beforeContentClassName
 			|| d.options.afterContentClassName