test: Add examples for breaking latches using VoidAction() Consider the following use cases: 1. If `Caps_Lock` is on the second level of some key, and `Shift` is latched, pressing the key locks `Caps` while also breaking the `Shift` latch, ensuring that the next character is properly uppercase. 2. On the German E1 layout, `ISO_Level5_Latch` is on the third level of `<AC04>`. So if a level 3 latch is used to access it, the level 5 must break the previous level 3 latch, else both latches would be active: the effective level would be 7 instead of the intended 5. Both uses cases can be implemented using existing features: - multiple actions per level; - `VoidAction()`: to break latches.