feat(alerts): Emit alert.sent analytic on incidents

[scttcper]

fixes #54417

[codecov]

Codecov Report

Merging #55479 (b01cbfc) into master (2631598) will increase coverage by 0.33%.
Report is 24 commits behind head on master.
The diff coverage is 89.36%.

@@            Coverage Diff             @@
##           master   #55479      +/-   ##
==========================================
+ Coverage   79.78%   80.11%   +0.33%     
==========================================
  Files        5042     5045       +3     
  Lines      215884   216034     +150     
  Branches    36512    36521       +9     
==========================================
+ Hits       172238   173080     +842     
+ Misses      38327    37675     -652     
+ Partials     5319     5279      -40     

Files Changed	Coverage
...entry/services/hybrid_cloud/integration/service.py	ø
...c/sentry/services/hybrid_cloud/integration/impl.py	50.00%
...c/sentry/integrations/slack/utils/notifications.py	66.66%
src/sentry/incidents/action_handlers.py	92.30%
src/sentry/analytics/events/__init__.py	100.00%
src/sentry/analytics/events/alert_sent.py	100.00%
src/sentry/integrations/msteams/utils.py	100.00%
src/sentry/integrations/opsgenie/utils.py	100.00%
src/sentry/integrations/pagerduty/utils.py	100.00%
src/sentry/rules/actions/notify_event_service.py	100.00%