Config binder gen: further tighten filtering constraint for input binding method invocations

[layomia]

Address feedback from #90619 (comment). cc @eiriktsarpalis.

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Issue Details

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Address feedback from #90619 (comment). cc @eiriktsarpalis.

Author:	layomia
Assignees:	layomia
Labels:	area-Extensions-Configuration, source-generator
Milestone:	9.0.0

[eiriktsarpalis]

We should aim doing this for RC2. cc @ericstj

[ericstj]

Fixed in RC2 with #90746