[Flang] Fix for Any/All simplification to properly propogate the inital value

When rank > 1, the inital value would be lost on inner loops, leading to the wrong
value to be returned, e.g. This would return T. This patch fixes this to use the correct
inital value for all cases.
```
    Integer :: m(0,10)
    Any(m .eq 0)
```

Reviewed By: vdonaldson

Differential Revision: https://reviews.llvm.org/D143899