Refactor: Simplify third-person pointer lock and escape key handling

src/runtime-three/navigation-controller.ts

@@ -166,7 +166,6 @@ export interface RuntimeControllerContext {
     input: RuntimeTargetLookInput
   ): RuntimeTargetLookInputResult;
   handleRuntimeTargetLookBoundaryReached?(): boolean;
-  handleThirdPersonPointerLockReleased?(): boolean;
   isCameraDrivenExternally(): boolean;
   getCameraYawRadians(): number;
   isInputSuspended(): boolean;