agent_ui: Don't create a new terminal when hitting the new thread binding from the terminal (#42898)

Closes https://github.com/zed-industries/zed/issues/32701

Release Notes:

- agent: Fixed a bug where hitting the `NewThread` keybinding when
focused inside a terminal within the agent panel would create a new
terminal tab instead of a new thread.

crates/agent_ui/src/acp/thread_view.rs

@@ -51,7 +51,7 @@ use ui::{
     PopoverMenuHandle, SpinnerLabel, TintColor, Tooltip, WithScrollbar, prelude::*,
 };
 use util::{ResultExt, size::format_file_size, time::duration_alt_display};
-use workspace::{CollaboratorId, Workspace};
+use workspace::{CollaboratorId, NewTerminal, Workspace};
 use zed_actions::agent::{Chat, ToggleModelSelector};
 use zed_actions::assistant::OpenRulesLibrary;
 
@@ -69,8 +69,8 @@ use crate::ui::{
 };
 use crate::{
     AgentDiffPane, AgentPanel, AllowAlways, AllowOnce, ContinueThread, ContinueWithBurnMode,
-    CycleModeSelector, ExpandMessageEditor, Follow, KeepAll, OpenAgentDiff, OpenHistory, RejectAll,
-    RejectOnce, ToggleBurnMode, ToggleProfileSelector,
+    CycleModeSelector, ExpandMessageEditor, Follow, KeepAll, NewThread, OpenAgentDiff, OpenHistory,
+    RejectAll, RejectOnce, ToggleBurnMode, ToggleProfileSelector,
 };
 
 #[derive(Copy, Clone, Debug, PartialEq, Eq)]
@@ -3144,7 +3144,7 @@ impl AcpThreadView {
                         .text_ui_sm(cx)
                         .h_full()
                         .children(terminal_view.map(|terminal_view| {
-                            if terminal_view
+                            let element = if terminal_view
                                 .read(cx)
                                 .content_mode(window, cx)
                                 .is_scrollable()
@@ -3152,7 +3152,15 @@ impl AcpThreadView {
                                 div().h_72().child(terminal_view).into_any_element()
                             } else {
                                 terminal_view.into_any_element()
-                            }
+                            };
+
+                            div()
+                                .on_action(cx.listener(|_this, _: &NewTerminal, window, cx| {
+                                    window.dispatch_action(NewThread.boxed_clone(), cx);
+                                    cx.stop_propagation();
+                                }))
+                                .child(element)
+                                .into_any_element()
                         })),
                 )
             })