pic title fix

[nassarofficial]

Summary
Ensure pic_title is initialized before either image/non-image branches run in load_from_doctags.
Default the title to "other" and override it with the detected chart_type when available so chart metadata always has a valid title.
Prevents UnboundLocalError when chart data is parsed without an image binary.

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Related Documentation

Checked 3 published document(s) in 1 knowledge base(s). No updates required.

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🔴 Enforce conventional commit

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Make sure that we follow https://www.conventionalcommits.org/en/v1.0.0/

• title ~= ^(fix|feat|docs|style|refactor|perf|test|build|ci|chore|revert)(?:\(.+\))?(!)?:

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Codecov Report

✅ All modified and coverable lines are covered by tests.

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