tomteb/carbon-lang: == Clone of https://github.com/carbon-language/carbon-lang.git == @ 03e693873b07a41447b7992cfdfd8a4d8ac1b1b0

Strom: 03e693873b

Dana Jansens 51498547c9 Always use `LookupImplWitness` instructions for symbolic witnesses (#5321)		před 1 rokem
..
extend_final.carbon	94dca7967b Allow `extend final impl as` for impl declarations (#5345)	před 1 rokem
forward_decls.carbon	51498547c9 Always use `LookupImplWitness` instructions for symbolic witnesses (#5321)	před 1 rokem