feat(text): Enable complex single-line UI text

[OmarAglan]

• Split from feat(text): Shape complex single-line UI text #3231
• Depends on feat(text): Add complex text shaping and rasterization #3292.

Enables shaped complex text for eligible single-line UI strings in Generals and Zero Hour. Accepted rasters are copied into the existing sentence textures, with texture allocation using the shaped dimensions.

Display strings reconcile their measured dimensions when rendering falls back, refresh hotkey data before measuring changed labels, and track resources created by size queries. Text and font changes share one rebuild flag.

Plain Latin-only strings, multiline text, lines rejected by size limits, monospaced text, and labels with active hotkey markers retain legacy rendering. Editable, password, and IME construction strings also retain that path because shaped caret and selection behavior is outside this change.

Validation

• Clean VC6 Release builds of Generals and Zero Hour.
• Local x86 checks: 24 direction cases and 20 native layout/pixel comparisons, with zero failures.
• 704,400 shaped texture-allocation cases passed; legacy allocation results were unchanged.
• Combined split verified against the original feature while preserving current upstream changes.
• git diff --check.

Implementation developed with AI assistance.