Allow to use TextMate scope in `notIn` property of `autoClosingPairs`

<!-- ⚠️⚠️ Do Not Delete This! feature_request_template ⚠️⚠️ --> <!-- Please read our Rules of Conduct: https://opensource.microsoft.com/codeofconduct/ --> <!-- Please search existing issues to avoid creating duplicates. --> <!-- Describe the feature you'd like. --> I would like to define an auto-closing pair `<`, `>` that _only happens when not in an expression_, because `<` is used as an operator in that situation. When defining an [auto-closing pair](https://code.visualstudio.com/api/language-extensions/language-configuration-guide#autoclosing), it is possible to specify whether this should _not_ happen when writing in a `string` or when writing a `comment`, e.g., ``` { "autoClosingPairs": [ { "open": "<", "close": ">", "notIn": ["string", "comment"] }, ] } ``` However, it would be more powerful if I could specify a TextMate scope there. In my language, I have a scope `meta.expression` for all expressions, so then I could do something such as ``` { "autoClosingPairs": [ { "open": "<", "close": ">", "notIn": { "scopes": ["meta.expression"] } }, ] } ```