gh-148171: Convert CALL_BUILTIN_FAST to leave inputs on the stack for refcount elimination in JIT

[Fidget-Spinner]

• Issue: Convert variadic argument opcodes to leave their argument on the stack for JIT optimization #148171

[Fidget-Spinner]

Results are pretty good. 7% faster on call microbenchmark:

from _testcapi import meth_fastcall

def testfunc(n):
    x = 0
    for _ in range(n):
        meth_fastcall(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
    return x

testfunc(20000000)

Summary
  PYTHON_JIT_STRESS=1 ./python ../add_int.py ran
    1.07 ± 0.10 times faster than PYTHON_JIT_STRESS=1 ../cpython_jit_pgo_tc_0/python ../add_int.py