Update to SpiderMonkey branch with PBL+weval patches.

This pulls in work from

- bytecodealliance/gecko-dev#45 (Add ahead-of-time ICs.)
- bytecodealliance/gecko-dev#46 (JS shell on WASI: add basic Wizer
  integration for standalone testing.)
- bytecodealliance/gecko-dev#47 (Update PBL for performance and in
  preparation for applying weval.)
- bytecodealliance/gecko-dev#48 (Add weval support to PBL.)

as originally PR'd onto a SpiderMonkey v124.0.2 branch then rebased to
v127.0.2 in bytecodealliance/gecko-dev#51.

gecko-revision

@@ -1 +1 @@
-0c27de70d9383757c2ea2e0b9d53c3bc7188be1c
+627f9c03497667389f309f59e29d4abe335fda07