Fix cmd+backspace not working in chat input (microsoft#185500)

Author: roblourens

src/vs/workbench/contrib/chat/browser/actions/chatTitleActions.ts

@@ -15,7 +15,7 @@ import { KeybindingWeight } from 'vs/platform/keybinding/common/keybindingsRegis
 import { ResourceNotebookCellEdit } from 'vs/workbench/contrib/bulkEdit/browser/bulkCellEdits';
 import { CHAT_CATEGORY } from 'vs/workbench/contrib/chat/browser/actions/chatActions';
 import { IChatWidgetService } from 'vs/workbench/contrib/chat/browser/chat';
-import { CONTEXT_IN_CHAT_SESSION, CONTEXT_REQUEST, CONTEXT_RESPONSE, CONTEXT_RESPONSE_VOTE } from 'vs/workbench/contrib/chat/common/chatContextKeys';
+import { CONTEXT_IN_CHAT_INPUT, CONTEXT_IN_CHAT_SESSION, CONTEXT_REQUEST, CONTEXT_RESPONSE, CONTEXT_RESPONSE_VOTE } from 'vs/workbench/contrib/chat/common/chatContextKeys';
 import { IChatService, IChatUserActionEvent, InteractiveSessionVoteDirection } from 'vs/workbench/contrib/chat/common/chatService';
 import { isRequestVM, isResponseVM } from 'vs/workbench/contrib/chat/common/chatViewModel';
 import { INotebookEditor } from 'vs/workbench/contrib/notebook/browser/notebookBrowser';
@@ -196,8 +196,7 @@ export function registerChatTitleActions() {
 					mac: {
 						primary: KeyMod.CtrlCmd | KeyCode.Backspace,
 					},
-					// when: ContextKeyExpr.or(CONTEXT_REQUEST, CONTEXT_RESPONSE),
-					when: CONTEXT_IN_CHAT_SESSION,
+					when: ContextKeyExpr.and(CONTEXT_IN_CHAT_SESSION, CONTEXT_IN_CHAT_INPUT.negate()),
 					weight: KeybindingWeight.WorkbenchContrib,
 				},
 				menu: {