GH-148189: Fix miscalculation of type-specific free list memory use (#148190)

GH-148189: Fix miscalculation of  type-specific free list memory use (#148190)

* Fix calculation of PyListObject size in allocator

* Fix size calculation in _PyDict_DebugMallocStats

* Fix memory size calculation in tupleobject.c

Adjusted memory calculation for PyTupleObject freelist entries.

* Revert in tupleobject.c

Removed unnecessary comment regarding memory calculation and the memory calculation itself.

* 📜🤖 Added by blurb_it.

* Update tupleobject.c

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Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>