fix(spans-migration): commit changes once everything passes

[nikkikapadia]

made a bunch of changes to the alerts migration scripts to make sure it works the way we want to

1. Ensure that on translation and rollback that all the changes in the db get made only after all actions are successful
2. For all count(...) functions with parameters, we're going to default them to the regular count so they get translated properly
3. Some functions get translated with the equation| prefix because we needed that in dashboards and explore but it's not needed for alerts so I've stripped out the equation prefix for these functions
4. Added a BUNCH of logs so that we know where things are failing if they fail during the migration

[codecov]

Codecov Report

❌ Patch coverage is 80.00000% with 8 lines in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...c/sentry/explore/translation/alerts_translation.py	80.00%	8 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #104580      +/-   ##
===========================================
+ Coverage   80.53%    80.54%   +0.01%     
===========================================
  Files        9349      9350       +1     
  Lines      399992    400519     +527     
  Branches    25646     25646              
===========================================
+ Hits       322117    322582     +465     
- Misses      77427     77489      +62     
  Partials      448       448