* this actually fixes #1219

* the terminal page should check the checkbox on the options page

* Discard these changes from #2651

* Add comments, pull function out to helper

(cherry picked from commit ce34c73)

For a radio button group to work properly, they need sequential IDs.
This moves the cursor radio buttons on the `conhost` property sheet to
be sequential.

## References
- Introduced with #2663
- Found while investigating #4186

## PR Checklist
* [x] Closes unfiled issue found while investigating #4186
* [x] I work here.
* [x] Manual test.
* [x] No documentation required.
* [x] Am core contributor.

## Detailed Description of the Pull Request / Additional comments
- `CheckRadioButton` takes a contiguous group of IDs. It will set one
  item in the list and then uncheck the rest. When a new one was added
  to the group, it was added to the end of the segment in the IDs file,
  but not immediately after the existing radio buttons. This means it
  accidentally turned off all the other buttons in the middle.
- To resolve this, I moved all the cursor buttons into their own
  sequential group number and I deprecated the old values.

## Validation Steps Performed
- [x] Ensured that the "Discard Old Duplicates" value was set in the
  registry, walked through debugger as `conhost` packed the `TRUE` value
  into the property sheet blob, walked through the property sheet
  `console.dll` as it unpacked the `TRUE`, then observed that the
  checkbox was actually set instead of getting unset by the
  `CheckRadioButton` call that went from 107 to 119 and accidentally
  unchecked number 112, `IDD_HISTORY_NODUP` even though I swear it was
  just set.