refactor: fix content yielding logic in path generator

[fllesser]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
src/nonebot_plugin_parser/parsers/data.py	66.66%	1 Missing ⚠️

Files with missing lines	Coverage Δ
src/nonebot_plugin_parser/parsers/data.py	91.12% <66.66%> (+2.17%)	⬆️

... and 3 files with indirect coverage changes

[github-actions]

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