Fix deadlock in virtual camera

onFrameAvailable is called with
egl::ScopedGlobalMutexLock::ScopedGlobalMutexLock() called first
and GlConsumer::mMutex locked within.

On another thread EglSurfaceTexture::updateTexture() is called and then
GlConsumer::mMutex is locked and then egl::ScopedGlobalMutexLock::ScopedGlobalMutexLock()

This create a reverse mutex locking order leading to a deadlock.

Bug: 410432483
Test: CtsVirtualDevicesCameraCtsTestCases
Flag: EXEMPT Bug fix
Change-Id: I3d8a3c5d3a30e86d547429ee8516725aebeba881