stream settings: Fix hide change-sub-type when admin unsubscribe stream.
stream settings: Fix hide change-sub-type when admin unsubscribe stream.

Fixes #10163

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