[llvm] [InstCombine] Add missing fold for `fsqrt(select(b, c1, c2)) => select(b, fsqrt(c1), fsqrt(c2))` (PR #113084)

[Matt Arsenault via llvm-commits]

https://github.com/arsenm commented:

Needs tests 

https://github.com/llvm/llvm-project/pull/113084