Silence the "Comments are not permitted in JSON." error for the emmet snippets.json to match parsing behavior

[robinmetral]

Type: Bug

The emmet snippets.json is tolerant to comments since #33818. This means that a snippets.json like this would still be parsed correctly and work as expected:

{
  // Hello!
  "html": {
    "snippets": {
      "hw": "{Hello world}"
    }
  }
}

However any comment in snippets.json will still be marked as an error by VSCode. In contrast, any comment in the VSCode settings.json is ignored.

emmet snippets.json	VSCode settings.json

I assume that this behavior can be changed, since the emmet snippets.json is already being parsed in a way that's tolerant to comments. Can these errors be silenced to match the underlying parsing behavior?

---

Does this issue occur when all extensions are disabled?: Yes

Steps to Reproduce:

1. create an emmet snippet.json file with comments
2. notice the mismatch: the file is being parsed correctly, but the comment is marked as an error ("Comments are not permitted in JSON. (521)")

VS Code version: Code 1.90.0 (89de5a8, 2024-06-04T19:43:07.605Z)
OS version: Linux x64 6.5.0-35-generic snap
Modes: