Ensure picture isn't recording in createBitmap

Picture#draw() will silently due an #endRecording() if it
wasn't called. Bitmap.createBitmap doesn't do this until
after it's too late.

So do an up-front #endRecording() to ensure state is
good to go

Bug: 80539264
Test: HardwareBitmapTests#testReadbackThroughPictureNoEndRecording
Change-Id: Ic66c41462e88880b73c5093d7541c4ce3d71adeb