Playground format is broken: `Failed to decode ConversionResult`

[joakin]

Steps

1. Open https://rescript-lang.org/try?version=v11.1.4&module=esmodule
2. Press Format
3. See error in console

{
    "RE_EXN_ID": "Failure",
    "_1": "Failed to decode ConversionResult. File \"RescriptCompilerApi.res\", line 406, characters 63-70",
    "Error": {}
}

• Happens in the latest v12 alpha as well
• Happens in Chrome and Firefox all the same

[mediremi]

This was fixed by rescript-lang/rescript-lang.org#1073