fix(emitter): pass group_id by keyword to avoid str(None) on clone

[re2zero]

When group_id is None (the default), str(None) produces the literal string 'None' on clone, corrupting every event emitted by the cloned emitter and its descendants.

Changes

• Pass constructor arguments by keyword in Emitter.clone() instead of positionally, so group_id=None stays None.
• Added test test_clone_without_group_id that exercises the default-None path, which the existing test (always uses group_id="test_group") never covered.

Fixes #1581

[Tomas2D]

Thanks @re2zero! This is a correct fix for #1581. Two things to note:

1. DCO is failing — please sign off your commits (git commit --amend -s / git rebase --signoff then force-push).
2. creator=self.creator if self.creator else None is slightly lossy — it would turn a falsy-but-valid creator into None. creator=self.creator is more faithful.
3. Heads-up: the same emitter change is also included in your chore: allow Python 3.14 by relaxing version constraint #1599 (which is otherwise about Python 3.14). The two PRs overlap — it's cleaner to keep this emitter fix here and remove it from chore: allow Python 3.14 by relaxing version constraint #1599 (see my note there).

We currently have three PRs for #1581; we're leaning toward #1582 (from the issue reporter) as it's already fully reviewed. Thanks for the contribution regardless! 🐝

[Tomas2D]

#1581 has now been fixed and merged via #1582, so I'm closing this one as resolved. Thanks for the fix, @re2zero! Note your #1599 is still open — see my note there; its emitter changes are now redundant, so that PR should be rescoped to just the Python 3.14 work. 🐝