Tests virtual keyboard geometry emulation, validation, and clearing.
After setting geometry: rect=10,500,380,250 events=1 event=250
Event count after setting identical geometry: 1
Invalid geometry error: Virtual keyboard geometry must contain finite, non-negative values within 10000000 CSS pixels
After rejected geometry: rect=10,500,380,250 insets=500,10,50,10,380,250 events=1 event=250
After clearing geometry: rect=0,0,0,0 insets=0,0,0,0,0,0 events=2 event=0
After session disconnect: rect=0,0,0,0