subscription: Update existing sub-row in settings on sub events.
subscription: Update existing sub-row in settings on sub events.

Update stream-subscription-row in stream settings, when
subsctiption add/removal event is received. This is only
to show dynamic effects to user on sub events.

rishig/zulip,zulip/zulip,punchagan/zulip,zulip/zulip,brainwane/zulip,rht/zulip,shubhamdhama/zulip,eeshangarg/zulip,tommyip/zulip,brainwane/zulip,eeshangarg/zulip,tommyip/zulip,synicalsyntax/zulip,andersk/zulip,showell/zulip,timabbott/zulip,hackerkid/zulip,rishig/zulip,rht/zulip,hackerkid/zulip,synicalsyntax/zulip,timabbott/zulip,hackerkid/zulip,punchagan/zulip,timabbott/zulip,punchagan/zulip,andersk/zulip,punchagan/zulip,timabbott/zulip,brainwane/zulip,rht/zulip,kou/zulip,showell/zulip,timabbott/zulip,synicalsyntax/zulip,showell/zulip,synicalsyntax/zulip,rishig/zulip,tommyip/zulip,brainwane/zulip,brainwane/zulip,zulip/zulip,andersk/zulip,hackerkid/zulip,kou/zulip,zulip/zulip,punchagan/zulip,tommyip/zulip,brainwane/zulip,shubhamdhama/zulip,kou/zulip,eeshangarg/zulip,showell/zulip,kou/zulip,tommyip/zulip,punchagan/zulip,brainwane/zulip,synicalsyntax/zulip,rht/zulip,zulip/zulip,rht/zulip,timabbott/zulip,showell/zulip,shubhamdhama/zulip,rishig/zulip,kou/zulip,hackerkid/zulip,zulip/zulip,punchagan/zulip,showell/zulip,timabbott/zulip,eeshangarg/zulip,zulip/zulip,andersk/zulip,showell/zulip,synicalsyntax/zulip,andersk/zulip,tommyip/zulip,shubhamdhama/zulip,synicalsyntax/zulip,hackerkid/zulip,kou/zulip,rishig/zulip,rht/zulip,rht/zulip,hackerkid/zulip,rishig/zulip,kou/zulip,eeshangarg/zulip,rishig/zulip,shubhamdhama/zulip,shubhamdhama/zulip,shubhamdhama/zulip,andersk/zulip,tommyip/zulip,andersk/zulip,eeshangarg/zulip,eeshangarg/zulip