MRF rejections should not log as errors

There was still one error left "Could not decode user at fetch #{ap_id}, #{inspect(e)}", this is now captured and logs as a debug message.
8 jobs for 783-MRF-rejections-should-not-log-as-errors in 8 minutes and 23 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Build
passed #112254
build

00:02:29

 
  Test
passed #112258
analysis

00:03:06

passed #112257
lint

00:02:21

passed #112255
unit-testing

00:05:54

passed #112256
unit-testing-rum

00:05:40

 
  Benchmark
manual #112259
allowed to fail manual
benchmark
 
  Deploy
manual #112260
allowed to fail manual
review_app
manual #112261
allowed to fail manual
stop_review_app