fix(core): show the correct content in the tui terminal pane for skipped tasks (#31559)

## Current Behavior

When a task is skipped (e.g. some dep(s) failed), the terminal pane is
completely empty. If you navigate to another task and see its output and
navigate back to the skipped task, then you see the correct title and
borders but the output is wrong: it shows the output of the previous
task.


![image](https://github.com/user-attachments/assets/8d304019-a17e-4a5a-9369-30fb4025aeb3)


![image](https://github.com/user-attachments/assets/c43b9019-2438-46a1-8ebb-cf28c662afa6)

## Expected Behavior

The TUI terminal pane should be correctly rendered for skipped tasks. It
should correctly show the title, border and content (`Task was
skipped`).


![image](https://github.com/user-attachments/assets/f4f80b39-79c4-41c8-a2e5-cfdcb46030fa)

packages/nx/src/native/tui/app.rs

@@ -1005,6 +1005,10 @@ impl App {
                                         in_progress && pty.can_be_interactive();
                                     terminal_pane_data.pty = Some(pty.clone());
                                     has_pty = true;
+                                } else {
+                                    // Clear PTY data when switching to a task that doesn't have a PTY instance
+                                    terminal_pane_data.pty = None;
+                                    terminal_pane_data.can_be_interactive = false;
                                 }
 
                                 let is_focused = match self.focus {

packages/nx/src/native/tui/components/terminal_pane.rs

@@ -496,6 +496,28 @@ impl<'a> StatefulWidget for TerminalPane<'a> {
             return;
         }
 
+        // If the task was skipped, show skipped message
+        if matches!(state.task_status, TaskStatus::Skipped) {
+            let message_style = if state.is_focused {
+                self.get_base_style(TaskStatus::Skipped)
+            } else {
+                self.get_base_style(TaskStatus::Skipped)
+                    .add_modifier(Modifier::DIM)
+            };
+            let message = vec![Line::from(vec![Span::styled(
+                "Task was skipped",
+                message_style,
+            )])];
+
+            let paragraph = Paragraph::new(message)
+                .block(block)
+                .alignment(Alignment::Center)
+                .style(Style::default());
+
+            Widget::render(paragraph, safe_area, buf);
+            return;
+        }
+
         let inner_area = block.inner(safe_area);
 
         if let Some(pty_data) = &self.pty_data {