palcarazm / bootstrap5-toggle / 20895861676

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feat(performance): batch DOM calculations using requestAnimationFrame (#263)

Add requestAnimationFrame optimization to prevent
forced synchronous reflows during toggle size calculations.
This significantly improves performance when rendering multiple toggles.

- Split `handleToggleSize` into RAF-wrapped method and core `calculateToggleSize`
- Added `cancelPendingAnimationFrame()` for cleanup
- Call cancel in `destroy()` to prevent memory leaks
- Added fallback for browsers without RAF support
- Added comprehensive unit tests for new functionality

Performance Results:
- 500 toggles: 61.64% faster (299ms vs 780ms)
- 1000 toggles: 67.91% faster (783ms vs 2442ms)

Implements #258

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