[RyuJit] fix clang switch warning (#16693)
[RyuJit] fix clang switch warning (#16693)

* fix clang switch warning

* Try to set throw blocks only for nodes that generates exceptions themselves.
Update comments.

ruben-ayrapetyan/coreclr,mmitche/coreclr,poizan42/coreclr,ruben-ayrapetyan/coreclr,cshung/coreclr,poizan42/coreclr,cshung/coreclr,mmitche/coreclr,mmitche/coreclr,poizan42/coreclr,krk/coreclr,poizan42/coreclr,ruben-ayrapetyan/coreclr,wtgodbe/coreclr,krk/coreclr,poizan42/coreclr,wtgodbe/coreclr,krk/coreclr,wtgodbe/coreclr,krk/coreclr,ruben-ayrapetyan/coreclr,krk/coreclr,ruben-ayrapetyan/coreclr,ruben-ayrapetyan/coreclr,mmitche/coreclr,cshung/coreclr,mmitche/coreclr,mmitche/coreclr,krk/coreclr,wtgodbe/coreclr,wtgodbe/coreclr,cshung/coreclr,cshung/coreclr,poizan42/coreclr,cshung/coreclr,wtgodbe/coreclr