[CodingStyle] Early first class callable check on FunctionLikeToFirstClassCallableRector

[samsonasik]

Per change on:

• fix: FunctionLikeToFirstClassCallableRector #7265 (review)

It currently cause error:

There was 1 failure:

1) Rector\Tests\CodingStyle\Rector\FunctionLike\FunctionLikeToFirstClassCallableRector\FunctionLikeToFirstClassCallableRectorTest::test with data set #1 ('/Users/samsonasik/www/rector-...hp.inc')
assert(!$this->isFirstClassCallable())

This PR fix it /cc @calebdw

[samsonasik]

@calebdw here the error

https://github.com/rectorphp/rector-src/actions/runs/17713045203/job/50334301070?pr=7267#step:5:99

[samsonasik]

Fixed 🎉 /cc @calebdw

[calebdw]

Thanks, at church so couldn't fix

[samsonasik]

All checks have passed 🎉 @TomasVotruba I am merging it ;)

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