replaceAll doesn't allow replacements that change the string length

[ColinEberhardt]

"abcde".replaceAll("a", "---") results in the string ---bc, whereas I would expect it to return ---bcde.

To reproduce:

import "wasi";
import { Console} from "as-wasi";

const foo = "abcde".replaceAll("a", "---");
Console.log(foo);

{
  "scripts": {
    "build": "asc assembly/index.ts -b build/index.wasm -t build/index.wat --runtime half",
    "start": "wasmtime --dir . build/index.wasm"
  },
  "devDependencies": {
    "assemblyscript": "0.17.3"
  },
  "dependencies": {
    "as-wasi": "0.4.4"
  }
}

[dcodeIO]

Can confirm, might even cause memory corruption.