Pull in new regalloc2 with fastalloc fixes for exceptions, and re-enable and add to testing.#11533

cfallin merged 3 commits intobytecodealliance:mainbytecodealliance/wasmtime:mainfrom

cfallin:regalloc2-0.13.1-fastalloccfallin/wasmtime:regalloc2-0.13.1-fastallocCopy head branch name to clipboard