Fix missing return and use onDebugEvent

Author: srujzs

dwds/test/common/hot_restart_common.dart

@@ -411,7 +411,7 @@ void runTests({
       var vm = await client.getVM();
       var isolateId = vm.isolates!.first.id!;
       await client.streamListen('Debug');
-      final stream = client.onEvent('Debug');
+      final stream = client.onDebugEvent;
       final scriptList = await client.getScripts(isolateId);
       final main = scriptList.scripts!.firstWhere(
         (script) => script.uri!.contains('main.dart'),

dwds/test/fixtures/project.dart

@@ -49,7 +49,7 @@ class TestProject {
       webAssetsPath,
       dartEntryFileName,
     ];
-    editable
+    return editable
         ? p.joinAll([_fixturesCopy.absolute.path, ...entryFilePathInPkg])
         : absolutePath(pathFromFixtures: p.joinAll(entryFilePathInPkg));
   }

dwds/test/hot_restart_breakpoints_test.dart

@@ -83,7 +83,7 @@ void main() {
       await client.setFlag('pause_isolates_on_start', 'true');
       await client.streamListen(EventStreams.kIsolate);
       await client.streamListen(EventStreams.kDebug);
-      stream = client.onEvent(EventStreams.kDebug);
+      stream = client.onDebugEvent;
       consoleSubscription = context.webkitDebugger.onConsoleAPICalled.listen(
         (e) => consoleLogs.add(e.args.first.value as String),
       );