Fix panic feature flag detection (#35245)

The flag was being checked before feature flags were resolved.

Release Notes:

- N/A

crates/zed/src/zed.rs

@@ -126,17 +126,28 @@ pub fn init(cx: &mut App) {
     cx.on_action(quit);
 
     cx.on_action(|_: &RestoreBanner, cx| title_bar::restore_banner(cx));
-    if ReleaseChannel::global(cx) == ReleaseChannel::Dev || cx.has_flag::<PanicFeatureFlag>() {
+    let flag = cx.wait_for_flag::<PanicFeatureFlag>();
-        cx.on_action(|_: &TestPanic, _| panic!("Ran the TestPanic action"));
+    cx.spawn(async |cx| {
-        cx.on_action(|_: &TestCrash, _| {
+        if cx
-            unsafe extern "C" {
+            .update(|cx| ReleaseChannel::global(cx) == ReleaseChannel::Dev)
-                fn puts(s: *const i8);
+            .unwrap_or_default()
-            }
+            || flag.await
-            unsafe {
+        {
-                puts(0xabad1d3a as *const i8);
+            cx.update(|cx| {
-            }
+                cx.on_action(|_: &TestPanic, _| panic!("Ran the TestPanic action"));
-        });
+                cx.on_action(|_: &TestCrash, _| {
-    }
+                    unsafe extern "C" {
+                        fn puts(s: *const i8);
+                    }
+                    unsafe {
+                        puts(0xabad1d3a as *const i8);
+                    }
+                });
+            })
+            .ok();
+        };
+    })
+    .detach();
     cx.on_action(|_: &OpenLog, cx| {
         with_active_or_new_workspace(cx, |workspace, window, cx| {
             open_log_file(workspace, window, cx);