ux: hint Escape key when no tasks match in interactive selector

When a user runs a non-existent task (e.g. `vp run zzzzz`), the
interactive selector shows "No matching tasks." which can make users
think the command is hanging. Adding "Press Escape to clear search."
gives an actionable next step.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: branchseer

crates/vite_select/src/interactive.rs

@@ -434,7 +434,7 @@ pub fn render_items(writer: &mut impl Write, params: &RenderParams<'_>) -> anyho
 
     // Empty state
     if !has_items {
-        write!(writer, "  No matching tasks.{line_ending}")?;
+        write!(writer, "  No matching tasks. Press Escape to clear search.{line_ending}")?;
         lines += 1;
     }
 

crates/vite_task_bin/tests/e2e_snapshots/fixtures/task-select/snapshots/interactive enter with no results does nothing.snap

@@ -25,7 +25,7 @@ Select a task (↑/↓, Enter to run, type to search):
 @ expect-milestone: task-select:zzzzz:0
 Select a task (↑/↓, Enter to run, type to search): zzzzz
 
-  No matching tasks.
+  No matching tasks. Press Escape to clear search.
 @ write-key: enter
 @ write-key: escape
 @ expect-milestone: task-select::0