Zabbix

A.F....... [DEV-4496] added reset of client_secret on token_url change for media type OAuth

Merge in ZBX/zabbix from feature/DEV-4496-7.5 to master

* commit '7c13ac4658e67c5629b19b4c604728e4ff91d322':
  ..F....... [DEV-4496] added client_secret focus when user click change client secret button
  .......... [DEV-4496] added missing changes from 6229db7cf9f for 7.5 branch
  ..F....... [DEV-4496] fixed client secret reset tooltip being shown when client secret is shown as input already
  .......... [DEV-4496] use array key as case error message
  ..F....... [DEV-4496] fixed to display inline validation error instantly
  ..F....... [DEV-4496] removed extra brackets
  A.F....... [DEV-4496] additional improvements in media type update validation