[release] chore: bump version to 0.2.2

[Zachary-wW]

Change Summary

• Prepare LoongForge v0.2.2 by updating project.version from the stale 0.1.0 value to 0.2.2, following the latest published tag v0.2.1.
• Only package version metadata changes.

Validation

• Parsed pyproject.toml and confirmed the version is 0.2.2.
• Confirmed the only difference from upstream master is project.version.
• Checked the PR title and ran git diff --check.
• Ran the repository sensitive-information scanner, including history: no blocking findings; existing path and TODO warnings remain.

CI, GPU, and Image Impact

• No GPU or image validation is required for this metadata-only change.

Reviewer Notes

After merging, select the corresponding master commit in the Release Portal and start a Formal release. The Portal creates the matching v0.2.2 tag; the existing workflow builds the image, runs regression, and publishes images only after validation succeeds.

This PR does not create a tag or start a release. Release Notes are generated by the existing workflow after the formal release succeeds.