[profcheck][InstCombine] Preserve branch weights in logical identities (#165810)

For the simplification
```
(C && A) || (!C && B) --> sel C, A, B
```
(and related), if `C` (or (`!C`)) is the condition in the select
instruction representing the logical and, we can preserve that logical
and's branch weights when emitting the new instruction. Otherwise, the
profile data is unknown.

If `C` is the condition of both logical ands, then we just take the
branch weights of the first logical and (though in practice they should
be equal.)

Furthermore, `select-safe-transforms.ii` now passes under the profcheck
configuration, so we remove it from the failing tests.

Tracking issue: #147390

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