Brennan Gamwell

Revert "Hide legacy postConversion action that is no longer supported"

1

- Reverts segmentio/action-destinations#2132 - These actions should remain visible until we confirm that Google has actually deprecated them. More context here: https://twilio.slack.com/archives/GSUCUMF6J/p1721152825028129

Updates the PR template to require engineers to fill out a test doc for integration changes. ## Testing _Include any additional information about the testing you have completed to ensure...