[Bug] HTML language does not recognize inline <script type="module"> as JavaScript

Reproducible in vscode.dev or in VS Code Desktop?

• Not reproducible in vscode.dev or VS Code Desktop

Reproducible in the monaco editor playground?

• Not reproducible in the monaco editor playground

Monaco Editor Playground Code

monaco.editor.create(document.getElementById('container'), {
	value: `<script type="module">\n\tconsole.log("hello");\n</script>`,
	language: 'html'
});

Actual Behavior

The contents of the script tag are marked as language vs.editor.nullLanguage, precluding highlighting and, upon editing or merely moving the cursor within the tag, causing various callbacks for editor features to throw Unexpected languageId when calling LanguageConfigurationRegistry.getLanguageConfiguration.

Expected Behavior

Inline code is recognized as JavaScript, is syntax highlighted, and editing/navigation does not raise exceptions.

Additional Context

This began causing exceptions in version 0.32.0, with 0.31.1 and prior nothing is raised but the inline code is still similarly marked as vs.editor.nullMode.

[pansinm]

1. reproducible in the monaco editor playground

monaco.editor.create(document.getElementById('container'), {
	value: "```notsupport\nerror when press enter\n```",
	language: 'markdown'
});

1. solve this problem

+ monaco.languages.register({id: 'vs.editor.nullLanguage'})
+ monaco.languages.setLanguageConfiguration('vs.editor.nullLanguage', {})

monaco.editor.create(document.getElementById('container'), {
	value: "```notsupport\nerror when press enter\n```",
	language: 'markdown'
});

[jonatanklosko]

Same with Markdown, when annotating a code code block with unknown language:

```mermaid
graph TD;
  A-->B;
  A-->C;
  B-->D;
  C-->D;
```

Error:

errors.ts:21 Uncaught Error: Language id "vs.editor.nullLanguage" is not configured nor known

Error: Language id "vs.editor.nullLanguage" is not configured nor known
    at f (languageConfigurationRegistry.ts:130:10)
    at c.getLanguageConfiguration (languageConfigurationRegistry.ts:113:13)
    at u.getLanguageConfiguration (tokenizationTextModelPart.ts:329:45)
    at u.getWordAtPosition (tokenizationTextModelPart.ts:350:9)
    at Ot.getWordAtPosition (textModel.ts:1860:42)
    at F._getWord (wordHighlighter.ts:355:21)
    at F._run (wordHighlighter.ts:373:21)
    at F._onPositionChanged (wordHighlighter.ts:347:8)
    at wordHighlighter.ts:224:9
    at t.invoke (event.ts:607:17)
    at errors.ts:26:12

(reproduced on the https://microsoft.github.io/monaco-editor playground).

Note that this worked fine on 0.33.0 and broke on 0.34.0.