Fixed bug #78926: Handle class table reallocation on failed link

When we change back the bucket key on a class linking failure,
make sure to reload the bucket pointer, as the class table

Fixed bug #78926: Handle class table reallocation on failed link

When we change back the bucket key on a class linking failure,
make sure to reload the bucket pointer, as the class table may
have been reallocated in the meantime.

Also remove a bogus bucket key change in anon class registration:
We don't actually rename the class in this case anymore, the RTD
key is already the final name.

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