Hide ContinueChatInSessionAction when ChatEditingEditorContent is shown (#281381)

* Initial plan

* Hide ContinueChatInSessionAction when showing ChatEditingEditorContent overlay

Co-authored-by: joshspicer <[email protected]>

---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: joshspicer <[email protected]>

Author: Copilot

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

@@ -37,6 +37,7 @@ import { ChatAgentLocation } from '../../common/constants.js';
 import { PROMPT_LANGUAGE_ID } from '../../common/promptSyntax/promptTypes.js';
 import { AgentSessionProviders, getAgentSessionProviderIcon, getAgentSessionProviderName } from '../agentSessions/agentSessions.js';
 import { IChatWidgetService } from '../chat.js';
+import { ctxHasEditorModification } from '../chatEditing/chatEditingEditorContextKeys.js';
 import { CHAT_SETUP_ACTION_ID } from './chatActions.js';
 import { PromptFileVariableKind, toPromptFileVariableEntry } from '../../common/chatVariableEntries.js';
 import { NEW_CHAT_SESSION_ACTION_ID } from '../chatSessions/common.js';
@@ -73,6 +74,7 @@ export class ContinueChatInSessionAction extends Action2 {
 					ContextKeyExpr.equals(ResourceContextKey.Scheme.key, Schemas.untitled),
 					ContextKeyExpr.equals(ResourceContextKey.LangId.key, PROMPT_LANGUAGE_ID),
 					ContextKeyExpr.notEquals(chatEditingWidgetFileStateContextKey.key, ModifiedFileEntryState.Modified),
+					ctxHasEditorModification.negate(),
 				),
 			}
 			]