Preserve constructor TypeError in Version.replace - #501

Problem

Version.replace() catches every TypeError from the constructor and rewrites it as an unexpected-keyword error, even when all keyword names are valid:

from semver import Version
Version.parse("1.2.3").replace(major=None)
# TypeError: replace() got 0 unexpected keyword argument(s):

The actual problem is the value passed to int(), not an unknown keyword. The same happens for minor and patch, or an object that cannot be converted to an integer. This is a diagnostic fix; the exception type and accepted inputs do not change.

Change

Re-raise the original constructor exception when there are no unknown keys. Keep the existing custom error for genuinely unknown keywords, and keep subclass construction unchanged.

Add six regression cases covering the three numeric components and two invalid value types. Each checks that the constructor's original error is retained; all six fail before the fix.

Validation

Python 3.12.3:

• python -m pytest -q: 517 passed, 1 skipped, 100% reported statement/branch coverage.
• git diff --check: passed.
• Ruff on the two touched files reports the same 60 pre-existing findings on the baseline and patched versions; no unrelated lint cleanup is included.

AI assistance was used to prepare this patch and tests. The failure and test results above were reproduced locally.