fix: make git cleanliness check look at parent repos to avoid errors when mlops not run from repo root

[samdporter]

Fix git check failing when using mlops run from a subdirectory.

Issue:
Repo(self.project_path) only inspected exact path, so launching from a daughter directory raised InvalidGitRepositoryError even with a clean tree.

Proposed fix:
Adding search_parent_directories=True argument checks whole repo for .git, regardless of the launch directory.

[Copilot]

Pull request overview

This PR fixes the Git cleanliness check in Experiment.check_dirty() so it works when mlops run is executed from a subdirectory within a Git repository, by allowing GitPython to locate the repository root in parent directories.

Changes:

• Update GitPython Repo(...) initialization to search parent directories for .git, preventing InvalidGitRepositoryError when invoked from a daughter directory.

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[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
mlops
Experiment.py	175	41	77%	24, 54–59, 83, 88–89, 110, 112, 117, 173–184, 207–221, 240, 242–243, 291–292, 296–300, 304–305, 312–313
ProjectFile.py	23	1	96%	41
cli.py	55	17	69%	19–22, 36, 59–66, 86–88, 96–99, 107–108, 113
mlops/release
Release.py	33	7	79%	24, 28, 33–38
mlops/release/destinations
ReleaseDestination.py	9	1	89%	18
SharepointDestination.py	6	2	67%	12–13
ZenodoDestination.py	33	19	42%	21–25, 29–35, 43–60
mlops/release/sources
MLFlowSource.py	13	6	54%	13–14, 21–27
ReleaseSource.py	14	2	86%	14, 23
mlops/utils
Config.py	17	17	0%	1–24
TOTAL	415	113	73%

Tests	Skipped	Failures	Errors	Time
17	0 💤	0 ❌	0 🔥	6m 46s ⏱️

[mikewoodward94]

LGTM nice and simple fix