JIT: fix overly aggressive tail recursive call loop marking (#33517)

JIT: fix overly aggressive tail recursive call loop marking (#33517)

If there is a tail recursive call site, the jit will mark all blocks
from method entry to the block with the call as "in a loop," anticipating
a tail recursive call to loop optimization.

Because of some confusing naming we were doing this even for recursive calls
that were not tail calls. Upshot is that blocks were marked as being in loops
when they weren't, and (among other things) this made the inliner more
aggressive for calls in those blocks.