Change loop cloning conditions codegen (#59886)

Change loop cloning conditions codegen (#59886)

Add an option, statically determined at compile time,
to generate loop cloning loop choice conditions into one block
per condition instead of using bitwise `and` operators that
execute all non-dependent conditions in a single block. Set the
condition to use the one-block-per-condition mode.

This leads to code size reduction in the generated condition code,
generally performance improvements in the microbenchmarks,
as well as making it easier to understand.