gh-132776: Revert Moving memoryview XIData Code to memoryobject.c

[ericsnowcurrently]

This is a partial revert of gh-132821. It resolves the refleak introduced by that PR.

• Issue: memoryview Cross-Interpreter Data Has Some Minor Issues #132776

[vstinner]

I confirm that the change fix the refleak:

$ ./python -m test test__interpchannels -R 3:3
Result: SUCCESS
$ ./python -m test test_interpreters -R 3:3
Result: SUCCESS