[TECHNICAL SUPPORT] LPS-41483 Some methods of LayoutLocalService cannot be called due to wrong processing in LayoutLocalServiceStagingAdvice

Hi Máté,

I reviewed Laci's commit for the second time, as the first one helped us to find errors in the test cases which weren't called. @laszlocsontos fixed the test cases as well.

Please review this commit and let us know if you have any concerns.

Regards,
Vilmos