fix microsoft/vscode-copilot#3652 (microsoft#203305)

Author: jrieken

src/vs/workbench/contrib/inlineChat/browser/inlineChatController.ts

@@ -819,7 +819,7 @@ export class InlineChatController implements IEditorContribution {
 
 		this._resetWidget();
 
-		this._strategy?.pause?.();
+		this._strategy?.dispose?.();
 		this._session = undefined;
 	}
 

src/vs/workbench/contrib/inlineChat/browser/inlineChatStrategies.ts

@@ -61,7 +61,6 @@ export abstract class EditModeStrategy {
 	readonly onDidDiscard: Event<void> = this._onDidDiscard.event;
 
 	toggleDiff?: () => any;
-	pause?: () => any;
 
 	constructor(
 		protected readonly _session: Session,
@@ -466,10 +465,6 @@ export class LiveStrategy extends EditModeStrategy {
 		}
 	}
 
-	override pause = () => {
-		this._ctxCurrentChangeShowsDiff.reset();
-	};
-
 	async apply() {
 		this._resetDiff();
 		if (this._editCount > 0) {