Handle malformed collection operands in Version comparisons - #479

Comparing a Version with a malformed list, tuple, or dictionary leaks errors from the internal constructor. For example, Version(1, 0, 0) == [] raises TypeError even though equality with unsupported operands should evaluate to False.

Convert collection operands in the comparison decorator and return NotImplemented when construction raises TypeError or ValueError. Equality then returns False, and ordering raises Python's standard unsupported-comparison TypeError. Valid collections and subclass behavior are preserved; Version.compare() and string parsing are unchanged.

The patch adds 19 regression cases, updates the documentation's comparison example, and includes changelog.d/pr479.bugfix.rst using the actual PR number as documented by changelog.d/README.rst.

Validation against base 1e8757912f633684e1a65d9d7c7e2270c3c79928, reproduced independently in clean checkouts:

The changelog was added in a separate commit after draft creation. Towncrier validation passed; that commit changes only the reviewed newsfragment, leaving the tested code and documentation unchanged.

AI assistance: implementation and independent code review used Hermes with self-hosted GLM 5.3. Automated validation was reproduced separately. This does not represent a human review.