assistant: Fix assistant: open prompt library not opening the prompt library (#28156)

This PR fixes the `assistant: open prompt library` action in the command
palette not opening the prompt library when the Assistant Panel did not
have focus.

Fixes https://github.com/zed-industries/zed/issues/28058.

Release Notes:

- assistant: Fixed `assistant: open prompt library` not opening the
prompt library when the Assistant Panel was not focused.

crates/agent/src/assistant_panel.rs

@@ -17,7 +17,7 @@ use fs::Fs;
 use gpui::{
     Action, Animation, AnimationExt as _, AnyElement, App, AsyncWindowContext, Corner, Entity,
     EventEmitter, FocusHandle, Focusable, FontWeight, KeyContext, Pixels, Subscription, Task,
-    UpdateGlobal, WeakEntity, action_with_deprecated_aliases, prelude::*, pulsating_between,
+    UpdateGlobal, WeakEntity, prelude::*, pulsating_between,
 };
 use language::LanguageRegistry;
 use language_model::{LanguageModelProviderTosView, LanguageModelRegistry};
@@ -34,7 +34,7 @@ use util::ResultExt as _;
 use workspace::Workspace;
 use workspace::dock::{DockPosition, Panel, PanelEvent};
 use zed_actions::agent::OpenConfiguration;
-use zed_actions::assistant::ToggleFocus;
+use zed_actions::assistant::{OpenPromptLibrary, ToggleFocus};
 
 use crate::active_thread::ActiveThread;
 use crate::assistant_configuration::{AssistantConfiguration, AssistantConfigurationEvent};
@@ -48,12 +48,6 @@ use crate::{
     OpenAgentDiff, OpenHistory, ThreadEvent, ToggleContextPicker,
 };
 
-action_with_deprecated_aliases!(
-    assistant,
-    OpenPromptLibrary,
-    ["assistant::DeployPromptLibrary"]
-);
-
 pub fn init(cx: &mut App) {
     cx.observe_new(
         |workspace: &mut Workspace, _window, _cx: &mut Context<Workspace>| {