fix missing message for inline chat when hidden (microsoft#249888)

Author: jrieken

src/vs/workbench/contrib/chat/browser/chatEditing/chatEditingEditorOverlay.ts

@@ -56,13 +56,9 @@ class ChatEditorOverlayWidget extends Disposable {
 		this._domNode.classList.add('chat-editor-overlay-widget');
 
 		this._isBusy = derived(r => {
-
 			const entry = this._entry.read(r);
-			return entry?.waitsForLastEdits.read(r) ?? false;
-
-			// const session = this._session.read(r);
-			// const chatModel = session && _chatService.getSession(session?.chatSessionId);
-			// return chatModel?.requestInProgressObs.read(r) ?? false;
+			const session = this._session.read(r);
+			return entry?.waitsForLastEdits.read(r) ?? !session?.isGlobalEditingSession; // aka inline chat
 		});
 
 		const requestMessage = derived(r => {