ci: handle missing git tags in Build meta step

[Copilot]

git describe --tags --match 'v*' exits with code 128 when no matching tags exist (e.g. in a fork without version tags). Since the shell runs with -Eeuo pipefail, this kills the entire "Build meta" step before any subsequent steps can run.

Change

Added a || echo "0.0.0-dev" fallback so the step completes successfully when no version tags are present:

# Before
commit_version=$(git describe --tags --match 'v*' "${commit_sha}" | sed ...)

# After
commit_version=$(git describe --tags --match 'v*' "${commit_sha}" 2>/dev/null | sed ... || echo "0.0.0-dev")

When tags are present the behavior is unchanged; when they are absent the version resolves to 0.0.0-dev instead of crashing the job.

[github-actions]

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