YJIT: Fix SP index with optarg and unordered kwarg

	Previously when we were calling a method with an optional argument and
	multiple keywords arguments which weren't in the order the receiver
	expected we would use the wrong SP index to rearrange them.

	Fixes Bug #18453
	---
	 bootstraptest/test_yjit.rb | 16 ++++++++++++++++
	 yjit_codegen.c             |  7 +++++--
	 2 files changed, 21 insertions(+), 2 deletions(-)