[llvm] [WebAssembly] Limit increase of Ctx.End (PR #76676)

[via llvm-commits]

DavidKorczynski wrote:

> I'm not a fan a direct fuzzer outputs being checked in unless we can't find a way to reduce to something small/understandable (such as the one in this case).

OSS-Fuzz minimizes the input and the input added here is the fuzzer input as minimized by OSS-Fuzz. Similarly the minimized input produced by OSS-Fuzz in https://github.com/llvm/llvm-project/pull/77708 is 25 bytes and the one in https://github.com/llvm/llvm-project/pull/77698 is 132 bytes

https://github.com/llvm/llvm-project/pull/76676