feat: text alignment text shortcuts

[hejsztynx]

Summary

Wired up textAlignment to the already existing textShortcuts feature

Test Plan

On the main example apps' screens, I've prepared basic textShortcuts so you can test this feature

## - toggle a heading style
++ - apply a center alignment

Play around, mix them together. Everything should work as expected.

Screenshots / Videos

Screen.Recording.2026-08-19.at.18.56.48.mov

Compatibility

OS	Implemented
iOS	✅
Android	✅
Web	✅

Checklist

• E2E tests are passing
• Required E2E tests have been added (if applicable)

[Copilot]

Pull request overview

Wires text alignment (left/center/right/justify) into the existing textShortcuts feature so users can apply alignment via typed triggers across web, iOS, and Android.

Changes:

• Web: Adds alignment shortcut handling to the TipTap text shortcuts plugin (including “don’t reapply if already aligned” logic).
• Native: Updates iOS and Android shortcut handlers to allow alignment shortcuts even when other paragraph styles (e.g., headings) are active.
• Examples: Adds demo textShortcuts configurations to the example apps for manual verification.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/web/pmPlugins/TextShortcutsPlugin.ts	Allows alignment styles to be applied via paragraph shortcuts and avoids reapplying the same alignment.
src/types.ts	Extends TextShortcutStyle union with alignment values.
ios/utils/ShortcutsUtils.mm	Enables alignment shortcuts to run even when other paragraph styles are active; preserves typing attributes for empty-editor alignment edge case.
ios/EnrichedTextInputView.mm	Adds a guard to prevent typing-attributes reset from wiping newly-applied alignment in empty-editor scenarios.
ios/EnrichedTextInputView.h	Exposes a flag used to preserve typing attributes during empty checks after alignment shortcuts.
apps/example/src/screens/DevScreen.tsx	Adds sample textShortcuts for manual testing in the RN example app.
apps/example-web/src/App.tsx	Adds sample textShortcuts for manual testing in the web example app.
android/src/main/java/com/swmansion/enriched/textinput/utils/StyleUtils.kt	Introduces alignment shortcut detection helpers.
android/src/main/java/com/swmansion/enriched/textinput/utils/ShortcutsHandler.kt	Allows alignment shortcuts to apply even when paragraph has other non-alignment styles.

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[szydlovsky]

after some thought, iOS looks good 👍