jit: fix ICE on BUILT_IN_TRAP [PR99126]

jit: fix ICE on BUILT_IN_TRAP [PR99126]

gcc/jit/ChangeLog:
	PR jit/99126
	* jit-builtins.c
	(gcc::jit::builtins_manager::get_builtin_function_by_id):
	Update assertion to reject BUILT_IN_NONE.
	(gcc::jit::builtins_manager::ensure_optimization_builtins_exist):
	New.
	* jit-builtins.h
	(gcc::jit::builtins_manager::ensure_optimization_builtins_exist):
	New decl.
	* jit-playback.c (gcc::jit::playback::context::replay): Call it.
	Remove redundant conditional on bm.

gcc/testsuite/ChangeLog:
	PR jit/99126
	* jit.dg/test-trap.c: New test.