Bump test timeout threshold (#13661)

packages/flutter_tools/test/commands/create_test.dart

@@ -438,4 +438,4 @@ class LoggingProcessManager extends LocalProcessManager {
       mode: mode,
     );
   }
-}
\ No newline at end of file
+}

packages/flutter_tools/test/src/common.dart

@@ -103,4 +103,4 @@ const Timeout allowForRemotePubInvocation = const Timeout.factor(10.0);
 
 /// Test case timeout for tests involving creating a Flutter project with
 /// `--no-pub`. Use [allowForRemotePubInvocation] when creation involves `pub`.
-const Timeout allowForCreateFlutterProject = const Timeout.factor(2.0);
+const Timeout allowForCreateFlutterProject = const Timeout.factor(3.0);