Change default execution strategies to `Wasm` (#11170)

This pr changes all default execution strategies to `Wasm`. This is basically a deprecation of the
native runtime. While the native runtime isn't removed and can still be used, it will not be used
anymore by default.

This will also improve the usage for people who want to run random commits, which most often forget
to run with `--execution wasm`. Otherwise they often run into storage root mismatches because of
using the native runtime.