Fix GH-9420: Avoid invalid use of internal attributes on promoted properties #9661
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Internal attributes may cause compilation errors when used on promoted properties. This was reported in #9420. This PR fixes the reported bug by dropping unsupported internal attributes during compilation of promoted properties. This works for attributes that apply to a parameter but not a property (has been reported as bug). It also fixes the situation where an attribute applies to a property but not a parameter (not yet reported as bug).
Userland attributes are not affected by this change and unfortunately (due to the way they are implemented) cannot be fixed in the same way.