chat: queue/steer falls back to normal send when idle (#309324)

Chat queue/steer: fall back to normal send when no request is active

When the queue or steer action is invoked but no request is in progress,
send the message as a normal chat message instead of silently doing nothing.

Relaxes the precondition and Alt+Enter keybinding so the actions remain
reachable even after the session finishes, while keeping the Enter
keybinding gated behind queuingActionsPresent so it doesn't conflict
with the regular submit action.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: roblourens

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

@@ -67,14 +67,10 @@ export class ChatQueueMessageAction extends Action2 {
 			f1: false,
 			category: CHAT_CATEGORY,
 
-			precondition: ContextKeyExpr.and(
-				queuingActionsPresent,
-				ChatContextKeys.inputHasText,
-			),
+			precondition: ChatContextKeys.inputHasText,
 			keybinding: [{
 				when: ContextKeyExpr.and(
 					ChatContextKeys.inChatInput,
-					queuingActionsPresent,
 					effectiveDefaultIsSteer,
 				),
 				primary: KeyMod.Alt | KeyCode.Enter,
@@ -103,6 +99,12 @@ export class ChatQueueMessageAction extends Action2 {
 			return;
 		}
 
+		// If no request is in progress, send as a normal message instead of queuing
+		if (!widget.viewModel.model.requestInProgress.get()) {
+			widget.acceptInput();
+			return;
+		}
+
 		widget.acceptInput(undefined, { queue: ChatRequestQueueKind.Queued });
 	}
 }
@@ -118,10 +120,7 @@ export class ChatSteerWithMessageAction extends Action2 {
 			icon: Codicon.arrowUp,
 			f1: false,
 			category: CHAT_CATEGORY,
-			precondition: ContextKeyExpr.and(
-				queuingActionsPresent,
-				ChatContextKeys.inputHasText,
-			),
+			precondition: ChatContextKeys.inputHasText,
 			keybinding: [{
 				when: ContextKeyExpr.and(
 					ChatContextKeys.inChatInput,
@@ -133,7 +132,6 @@ export class ChatSteerWithMessageAction extends Action2 {
 			}, {
 				when: ContextKeyExpr.and(
 					ChatContextKeys.inChatInput,
-					queuingActionsPresent,
 					effectiveDefaultIsQueue,
 				),
 				primary: KeyMod.Alt | KeyCode.Enter,
@@ -154,6 +152,12 @@ export class ChatSteerWithMessageAction extends Action2 {
 			return;
 		}
 
+		// If no request is in progress, send as a normal message instead of steering
+		if (!widget.viewModel.model.requestInProgress.get()) {
+			widget.acceptInput();
+			return;
+		}
+
 		widget.acceptInput(undefined, { queue: ChatRequestQueueKind.Steering });
 	}
 }