HH-44533 move json asserts and fix tests
Merge remote-tracking branch 'origin/HH-44533' into EXP-12974
release 2.21.22 [an.sumin@hh.ru]
HH-48514 add more handler tests
HH-48514 add new MicroHandler test
HH-48514 set MicroHandler group name
HH-48514 remove some dead code
Merge remote-tracking branch 'origin/HH-48514' into EXP-12994
release 2.21.23 [an.sumin@hh.ru]
HH-48399 remove @before