* Avoid changing overlay committed layer.
* basic test
* Add some tx in the test.
* only update from backend value on missing entry in both layer.
deleted entry is replace by empty vec.
* test and review changes
* additional test and review change
* remove test on changing existing value, it does not always panic
depending on existing content
* Update primitives/state-machine/src/overlayed_changes.rs
* Update primitives/state-machine/src/overlayed_changes.rs
Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
cheme
c05ec630ff