gallivm/nir: Call nir_lower_bool_to_int32 after nir_opt_algebraic_late

gallivm/nir: Call nir_lower_bool_to_int32 after nir_opt_algebraic_late

All of the opcodes in nir_opt_algebraic_late are the unsized (1-bit)
versions.  If the lowering to int32 happens first, many of the
optimizations and lowerings won't happen.

Of particular importance is the lowering of fisfinite.  If a shader
happens to contain fisfinite of an fp16 value, it will assert later
during compliation.

Reviewed-by: Dave Airlie <airlied@redhat.com>
Fixes: 78b4e417d44 ("gallivm: handle fisfinite/fisnormal")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14942>