support indicator and disabled in chained hx-location requests

[MichaelWest22]

Description

indicators and disabled elements can remain after hx-location does a partial replacement that does not replace the main part of the page where the indicators and disabled elements are located. we need to leave the indicators in place while the hx-location does its request as the request cycle is not yet finished which leads to this issue. So to fix this properly we can chain the indicators and disabled elements into the next ajax request by moving these into the ctx object instead of private closures. With this change they stay as tracked and get removed cleanly when the hx-location request completes.

Corresponding issue:
#4090

Testing

Tests needed updating a bit for the new ctx system and added a test for hx-location chaining.

Checklist

• I have read the contribution guidelines
• I have targeted this PR against the correct branch (master for website changes, dev for
  source changes)
• This is either a bugfix, a documentation update, or a new feature that has been explicitly
  approved via an issue
• I ran the test suite locally (npm run test) and verified that it succeeded