FillRegDisplay: initialize volatileCurrContextPointers for ARM and ARM64 (#19332)
FillRegDisplay: initialize volatileCurrContextPointers for ARM and ARM64 (#19332)

We need to initialize volatileCurrContextPointers because they could be
used by GC in the case of the leaf frame. This patch fixes crashes during
GC when we are single stepping using managed debugger.
krk/coreclr,poizan42/coreclr,wtgodbe/coreclr,mmitche/coreclr,poizan42/coreclr,cshung/coreclr,wtgodbe/coreclr,cshung/coreclr,wtgodbe/coreclr,cshung/coreclr,cshung/coreclr,krk/coreclr,poizan42/coreclr,poizan42/coreclr,mmitche/coreclr,poizan42/coreclr,krk/coreclr,krk/coreclr,mmitche/coreclr,wtgodbe/coreclr,wtgodbe/coreclr,poizan42/coreclr,krk/coreclr,cshung/coreclr,mmitche/coreclr,mmitche/coreclr,mmitche/coreclr,wtgodbe/coreclr,krk/coreclr,cshung/coreclr