Fixes (#4036) - Preserve user key bindings when unbinding resource keys

[MohabCodeX]

• Fixes bindKey and unbindKey fail to handle client key bindings correctly #4036
  When unbindKey() is called by a resource, it incorrectly removes user-defined key bindings, forcing players to restart the game to restore them.

❌ Before:

1. /bind 1 bug → user binds key
2. bindKey("1", "down", "bug") → resource overrides it
3. unbindKey("1", "down", "bug") → removes both bindings
4. Key "1" no longer works, user binding is lost

✅ After:

1. Same steps
2. Resource unbinds → only its binding is removed
3. User binding is restored automatically

Tested.