a1186685a9
Adds the four missing overloads (value + predicate × WaitAsync + WaitForAsync) to CompileAttributeAccessor so template/call scripts that use Attributes.WaitAsync or Attributes.WaitForAsync pass design-time Roslyn validation. Covers both root scope and composed/child scope (Children["x"].Attributes.WaitAsync) automatically since CompileCompositionAccessor.Attributes already returns CompileAttributeAccessor.