[InstCombine] Missed fold of ((y != 0) | y) in boolean context

The following the expression can be simplified to:

`return y != 0;`

y is unsigned, so y > 0 is equivalent to y != 0.

```c++
bool x(unsigned long long y) { return (y > 0) | y; }
```

```llvm
define i1 @x(i64 %y) {
entry:
%gt = icmp ugt i64 %y, 0
%gt64 = zext i1 %gt to i64
%or = or i64 %gt64, %y
%result = icmp ne i64 %or, 0
ret i1 %result
}
```

expected

```llvm
define i1 @x(i64 %y) {
%result = icmp ne i64 %y, 0
ret i1 %result
}
```

https://godbolt.org/z/c4PEGWPxM

I don't expect this pattern to show up often but gcc for example realizes the y > 0 is unnecessary
https://godbolt.org/z/nKdPn7zTf