[mono] Fix a few corner case overflow operations#58114

Merged

BrzVlad merged 4 commits intodotnet:mainfrom

BrzVlad:fix-51323

Aug 26, 2021

Commits on Aug 23, 2021

Commits on Aug 25, 2021

[interp] Fix a few overflow conversions
BrzVlad
committed

Commits on Aug 26, 2021

[interp] Extract some conversion logic in mono-math.h
BrzVlad
committed