Keep only pure-federation side-effects of user.ap_enabled

Only parts kept are:
- Do not push to non AP-enabled actors
- Upgrade actors to AP-enabled when receiving an Activity from them
8 jobs for bugfix/non-ap_enabled-direct_follow in 5 minutes and 56 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #105271
build

00:02:58

 
  Test
passed #105275
analysis

00:00:52

passed #105274
lint

00:00:22

passed #105272
unit-testing

00:02:57

87.0%
passed #105273
unit-testing-rum

00:02:38

 
  Benchmark
manual #105276
allowed to fail manual
benchmark
 
  Deploy
manual #105277
allowed to fail manual
review_app
manual #105278
allowed to fail manual
stop_review_app