Disable -fprof-late-overloaded-calls for join points.

Addresses #26138

Disable -fprof-late-overloaded-calls for join points.

Currently GHC considers cost centres as destructive to
join contexts. Or in other words this is not considered valid:

    join f x = ...
    in
              ... -> scc<tick> jmp

This makes the functionality of `-fprof-late-overloaded-calls` not feasible
for join points in general. We used to try to work around this by putting the
ticks on the rhs of the join point rather than around the jump. However beyond
the loss of accuracy this was broken for recursive join points as we ended up
with something like:

    rec-join f x = scc<tick> ... jmp f x

Which similarly is not valid as the tick once again destroys the tail call.
One might think we could limit ourselves to non-recursive tail calls and do
something clever like:

  join f x = scc<tick> ...
  in ... jmp f x

And sometimes this works! But sometimes the full rhs would look something like:

  join g x = ....
  join f x = scc<tick> ... -> jmp g x

Which, would again no longer be valid. I believe in the long run we can make
cost centre ticks non-destructive to join points. Or we could keep track of
where we are/are not allowed to insert a cost centre. But in the short term I will
simply disable the annotation of join calls under this flag.