Fix false warning about usage outside of ti for extended operators

[insomnes]

Current ExecutorSafeguard emits a false warning about extended operators' usage outside of the task instance.

In #42849 the fix was introduced, but it's tests are flawed and depend on the testing order and values in ExecutorSafeguard leaking between tests.

An isolated call of pytest -sv tests/models/test_baseoperatormeta.py::TestExecutorSafeguard::test_executor_when_extended_classic_operator_called_from_dag shows tests fail while pytest -sv tests/models/test_baseoperatormeta.py is green.

Changes:

• adapt to wrapped execute methods calling orders for extended operator classes by propagating sentinel via base classes keys to callers
• emit warning only once per class chain
• clean ExecutorSafeguard state between tests
• expand tests

closes: #47511
related: #45498

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[eladkal]

We already have PR for this #47523

[uranusjr]

I’m going with the other PR since that one alreay has multiple approvals.

[insomnes]

Sorry, I've missed that one during search. Thank you.