Move property_editor/reconnecting_overlay.dart -> not_connected_overlay.dart (#9594)

The changes I made to this file prevented git from detecting it as a rename in my previous PR. To slightly simplify the review, I left the file where it was with a TODO to move after. This is just that move.

packages/devtools_app/lib/src/standalone_ui/ide_shared/not_connected_overlay.dart

diff --git a/packages/devtools_app/lib/src/standalone_ui/ide_shared/property_editor/reconnecting_overlay.dart b/packages/devtools_app/lib/src/standalone_ui/ide_shared/not_connected_overlay.dart
similarity index 90%
rename from packages/devtools_app/lib/src/standalone_ui/ide_shared/property_editor/reconnecting_overlay.dart
rename to packages/devtools_app/lib/src/standalone_ui/ide_shared/not_connected_overlay.dart
index aac701f..0a67722 100644
--- a/packages/devtools_app/lib/src/standalone_ui/ide_shared/property_editor/reconnecting_overlay.dart
+++ b/packages/devtools_app/lib/src/standalone_ui/ide_shared/not_connected_overlay.dart
@@ -6,11 +6,8 @@
 import 'package:devtools_app_shared/ui.dart';
 import 'package:flutter/material.dart';
 
-import '../../../shared/globals.dart';
-import '../../../shared/ui/common_widgets.dart';
-
-// TODO(dantup): Rename and move this file one level up. Leaving as-is to
-//  make the review/diff simpler.
+import '../../shared/globals.dart';
+import '../../shared/ui/common_widgets.dart';
 
 /// An overlay to show when we are not connected to DTD based on the
 /// [DTDConnectionState] classes.

packages/devtools_app/lib/src/standalone_ui/standalone_screen.dart

diff --git a/packages/devtools_app/lib/src/standalone_ui/standalone_screen.dart b/packages/devtools_app/lib/src/standalone_ui/standalone_screen.dart
index 6a1f64a..0072eed 100644
--- a/packages/devtools_app/lib/src/standalone_ui/standalone_screen.dart
+++ b/packages/devtools_app/lib/src/standalone_ui/standalone_screen.dart
@@ -8,8 +8,8 @@
 
 import '../shared/globals.dart';
 import '../shared/ui/common_widgets.dart';
+import 'ide_shared/not_connected_overlay.dart';
 import 'ide_shared/property_editor/property_editor_panel.dart';
-import 'ide_shared/property_editor/reconnecting_overlay.dart';
 import 'vs_code/flutter_panel.dart';
 
 /// "Screens" that are intended for standalone use only, likely for embedding