fix(YodaStyleFixer): do not touch require(_once), include(_once) and yield from statements

[SpacePossum]

closes #7280

The removed tests show we would no longer support some very exotic use case of (require|include)(_once)+ statements,
but I think that is no issue compared to the fix this PR offers.

[coveralls]

coverage: 94.64% (+0.001%) from 94.639% when pulling 0cbd77e on SpacePossum:7280 into 573ab70 on PHP-CS-Fixer:master.

[Wirone]

Some people could say that's a breaking change (removed test cases), but I'm OK with this as these scenarios were pretty weird and we should not support them 😆.

👍 from me, but let's wait for @keradus.

[keradus]

i have some mixed feelings.
the new version, for such removed test scenario, is now producing invalid PHP code. Not a code that is not visually nice (eg wrong whitespaces), but invalid PHP syntax

[SpacePossum]

I struggle to see how it produces invalid PHP code,
and, if so, even more problematic would be the test setup would allow the generated result being invalid PHP code.
If it helps I can recover the removed tests as leaving the input as untouched.

[keradus]

OK, sth wrong on my side - sorry for that.
cannot reproduce the problem i though I see anymore.