Fix throwing out of catch (microsoft#252126)

Part of microsoft/vscode-copilot-release#9802

Author: roblourens

src/vs/workbench/contrib/chat/common/chatServiceImpl.ts

@@ -884,6 +884,7 @@ export class ChatService extends Disposable implements IChatService {
 					});
 				}
 			} catch (err) {
+				this.logService.error(`Error while handling chat request: ${toErrorMessage(err, true)}`);
 				const result = 'error';
 				this.telemetryService.publicLog2<ChatProviderInvokedEvent, ChatProviderInvokedClassification>('interactiveSessionProviderInvoked', {
 					timeToFirstProgress: undefined,
@@ -899,10 +900,9 @@ export class ChatService extends Disposable implements IChatService {
 					numCodeBlocks: 0,
 					enableCommandDetection,
 					isParticipantDetected: !!detectedAgent,
-					attachmentKinds: this.attachmentKindsForTelemetry(request.variableData),
+					attachmentKinds: request ? this.attachmentKindsForTelemetry(request.variableData) : [],
 					model: this.resolveModelId(options?.userSelectedModelId)
 				});
-				this.logService.error(`Error while handling chat request: ${toErrorMessage(err, true)}`);
 				if (request) {
 					const rawResult: IChatAgentResult = { errorDetails: { message: err.message } };
 					model.setResponse(request, rawResult);