Update AnimatedColor-test.js

## Summary:

Fixed an issue in `AnimatedColor.js` where `_listenerCount` could become negative during component unmount, leading to native subscription memory leaks.

When `AnimatedColor.__detach()` is called, it invokes `removeAllListeners()` on its channel nodes (r, g, b, a), resetting their `_listenerCount` to 0. If infrastructure cleanup then calls `removeListener(id)` on those same nodes, the count drops to -1, permanently bypassing the cleanup condition `if (this._listenerCount === 0)` — so `this._updateSubscription?.remove()` never fires.

Fix: Added a `_listeners` map to `AnimatedColor` with overrides for `addListener`, `removeListener`, and `removeAllListeners`. `removeListener` now returns early if the id is not found (already cleaned up by `__detach`), mirroring the pattern used by `AnimatedValueXY`.

## Changelog:

[GENERAL] [FIXED] - Prevent negative listener count in AnimatedColor causing native subscription memory leaks after `__detach()`

## Test Plan:

Added regression tests in `Libraries/Animated/tests/AnimatedColor-test.js`:

- `_listenerCount` does not go negative after `__detach()` + `removeListener()`
- `removeListener` after `removeAllListeners` is a safe no-op
- Native subscription starts correctly for all 4 channels (r/g/b/a)
- Native subscription cleans up correctly when count reaches 0
- No native subscription leak after re-attach cycle

Author: mhdamirhamza