fix: draw non-CJK characters upright in vertical CJK line labels (#8205)

* fix: draw non-CJK characters upright in vertical line labels (#5404)

* fix: limit upright glyphs in vertical line labels to numbers and short
uppercase codes

* chore: update bundle_size.json for the upright glyph heuristic

* fix: accept uppercase letters of any script in upright codes

* fix: bundle_size.json remake

* fix: move changelog entry under the main section

* refactor: split determineLineVerticals into helper & add jsdoc

* test: refactor glyph orientation tests and rename test helpers

* refactor: simplify vertical glyph orientation test helpers

* test: inline missing glyph test setup

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Co-authored-by: Harel M <harel.mazor@gmail.com>