debugger: Add run to cursor and evaluate selected text actions (#28405)

## Summary

### Actions

This PR implements actions that allow a user to "run to cursor" and
"evaluate selected text" while there's an active debug session and
exposes the functionality to the UI as well.

- Run to cursor: Can be accessed by right clicking on the gutter
- Evaluate selected text: Can be accessed by selecting text then right
clicking in the editor

### Bug fixes

I also fixed these bugs as well

- Panic when using debugger: Stop action
- Debugger actions command palette filter not working properly in all
cases
- We stopped displaying the correct label in the session's context menu
when a session was terminated

Release Notes:

- N/A

---------

Co-authored-by: Max Brunsfeld <max@zed.dev>
Co-authored-by: Remco Smits <djsmits12@gmail.com>

crates/debugger_ui/src/session/running.rs

@@ -432,6 +432,10 @@ impl RunningState {
         self.session_id
     }
 
+    pub(crate) fn selected_stack_frame_id(&self, cx: &App) -> Option<dap::StackFrameId> {
+        self.stack_frame_list.read(cx).selected_stack_frame_id()
+    }
+
     #[cfg(test)]
     pub fn stack_frame_list(&self) -> &Entity<StackFrameList> {
         &self.stack_frame_list
@@ -492,7 +496,6 @@ impl RunningState {
         }
     }
 
-    #[cfg(test)]
     pub(crate) fn selected_thread_id(&self) -> Option<ThreadId> {
         self.thread_id
     }