[Core-Enhances] Refactor `TaskExecutorManager$1.class` to a descriptive name

[pavly-gerges]

It will be better to refactor this anonymous class to a private class with a proper name describing what it really does, in this case, it executes a method stack, so a MethodStack or StackExecutor or StackHandler may be better, it will be likely a StackHandler.

[pavly-gerges]

A StackFrameHandler may be a better alternative.