`keep-sorted` for subset of object keys

Clear and concise description of the problem

For example, suppose you have:

const object = {
  // Group of entries
  b: true,
  c: true,
  a: true,

  // Other group of entries
  z: true,
  x: true,
  y: true,
}

It would be nice if I could add keep-sorted above a group of entries to sort them separately. Right now adding the comment above one of the groups results in:

[keep-sorted] error: Unable to find object/array/interface to sort  command/command

Suggested solution

Allow keep-sorted above a group of entries

Alternative

No response

Additional context

No response

Validations

• Follow our Code of Conduct
• Read the Contributing Guide.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

Start by locating the keep-sorted handling in the repository and reproduce the reported error using the object example and the command/command path. Done means a keep-sorted comment can apply to one group of object keys independently while other groups remain separate, without the unable-to-find error.