ICU-22707 Add support for property Modifier_Combining_Mark

[echeran]

This PR is based on top of #3049.

Thus, this PR should not be merged until #3049 is merged, and then this PR is updated after that accordingly from the latest on main.

~If ignoring the changes from #3049 (InCB) in the unit test ucdtest.cpp, then I think ucdtest.cpp passes for the changes here for MCM...~

~After reverting including of MCM in the trie and hard coding the data like for ID_Compat_Math_Continue, the unit test started failing.~

Checklist

• [X] Required: Issue filed: https://unicode-org.atlassian.net/browse/ICU-22707
• [X] Required: The PR title must be prefixed with a JIRA Issue number.
• [X] Required: The PR description must include the link to the Jira Issue, for example by completing the URL in the first checklist item
• [X] Required: Each commit message must be prefixed with a JIRA Issue number.
• [X] Issue accepted (done by Technical Committee after discussion)
• [X] Tests included, if applicable
• [ ] API docs and/or User Guide docs changed or added, if applicable