Feature or enhancement

Proposal:

Proposal:

• Add BRANCH_TAKEN and BRANCH_NOT_TAKEN events to sys.monitoring
• Deprecate the old BRANCH event (as it will be redundant)
• Monitoring BRANCH events implicitly monitors both the BRANCH_TAKEN and BRANCH_NOT_TAKEN events
• Disabling a BRANCH_TAKEN event will implicitly disable the matching BRANCH event, but only for the taken branch
• Disabling a BRANCH_NOT_TAKEN event will implicitly disable the matching BRANCH event, but only for the not-taken branch
• Disabling a BRANCH event will implicitly disable the both the matching BRANCH_TAKEN and BRANCH_NOT_TAKEN events

This is fully backwards compatible.

Has this already been discussed elsewhere?

I have already discussed this feature proposal on Discourse

Links to previous discussion of this feature:

Discussion which also links to prior discussions.

Linked PRs

• GH-122548: Implement branch taken and not taken events for sys.monitoring #122564
• GH-122548: Correct magic number comment #128115

### Tasks
- [ ] https://github.com/python/cpython/issues/123044
- [ ] https://github.com/python/cpython/issues/123048
- [ ] https://github.com/python/cpython/issues/123050
- [ ] https://github.com/python/cpython/issues/128375
- [ ] https://github.com/python/cpython/issues/128533
- [ ] https://github.com/python/cpython/issues/128534