DAOS-18238 chk: handle CRT_EVS_GRPMOD event from CaRT PG - b26

[Nasf-Fan]

To guarantee that the rank deatch event will not be omitted, related CR logic needs handle the event from both SWIM and CaRT PG, although there will be a lot of useless event callback.

Test-tag: recovery

Steps for the author:

• Commit message follows the guidelines.
• Appropriate Features or Test-tag pragmas were used.
• Appropriate Functional Test Stages were run.
• At least two positive code reviews including at least one code owner from each category referenced in the PR.
• Testing is complete. If necessary, forced-landing label added and a reason added in a comment.

After all prior steps are complete:

• Gatekeeper requested (daos-gatekeeper added as a reviewer).

[github-actions]

Ticket title is 'recovery/cat_recov_core.py:CatRecovCoreTest.test_daos_cat_recov_core - CR20-28 failed - 1 rank adminexcluded, others checkerstarted'
Status is 'In Progress'
Labels: '2.6.4-aurora.p1,2.8.0tb1,ci_master_daily,ci_master_provider,daily_test'
https://daosio.atlassian.net/browse/DAOS-18238

[Nasf-Fan]

NOTE: do not land this patch until the patch #17428 has been landed, otherwise there may be merge conflict.