Camera: VNDK: Fix deferred endConfigure due to missing sessionParam

In case the app doesn't provide sessionParameters, the VNDK should still
allow endConfigure() to be called to the camera service.

Test: Run test app and observe camera streams properly
Bug: 120505813
Change-Id: Ifa72dca61b8e25cd433d2c02c70b1c8e5e097228