feat(ios): add textAlignment

[kacperzolkiewski]

Summary

1. Add textAlignment support on iOS
2. Change ZWS from \u200B to \u200A

• Reasoning: When textAlignment is set to center or right, the layout manager incorrectly calculates line geometry for lines containing only \u200B, often resulting in a collapsed input height. Switching to \u200A forces the layout engine to recognize the line's existence, ensuring correct height and rendering for all alignments.
• Known Limitation: Since \u200A is a visible character with non-zero width, it may appear as a visible space when used within monospaced fonts (e.g., Code Blocks). This happens because monospaced fonts force all characters, including hair spaces, to have the same fixed width.

Screen.Recording.2026-01-30.at.10.13.39.mov

Test Plan

Run example app and play with textAlignment when different styles are toggled.
Check if paragraphs/lists with different textAlignment than left are properly parsed and contain style="text-align:center|right|justify" inside HTML

Screenshots / Videos

Screen.Recording.2026-01-30.at.10.09.52.mov

Compatibility

OS	Implemented
iOS	✅
Android	❌