css: Fix selecting of EDITED notices and weird whitespace.
css: Fix selecting of EDITED notices and weird whitespace.

This completes the effort to make selecting messages work in a way
consistent with what users might expect to be correct.

Fixes #5328.

rishig/zulip,verma-varsha/zulip,shubhamdhama/zulip,mahim97/zulip,zulip/zulip,kou/zulip,dhcrzf/zulip,verma-varsha/zulip,hackerkid/zulip,hackerkid/zulip,rishig/zulip,synicalsyntax/zulip,timabbott/zulip,kou/zulip,dhcrzf/zulip,brockwhittaker/zulip,amanharitsh123/zulip,amanharitsh123/zulip,punchagan/zulip,andersk/zulip,rht/zulip,eeshangarg/zulip,showell/zulip,Galexrt/zulip,hackerkid/zulip,punchagan/zulip,eeshangarg/zulip,dhcrzf/zulip,eeshangarg/zulip,shubhamdhama/zulip,tommyip/zulip,hackerkid/zulip,punchagan/zulip,verma-varsha/zulip,zulip/zulip,dhcrzf/zulip,brainwane/zulip,rht/zulip,brainwane/zulip,rht/zulip,hackerkid/zulip,mahim97/zulip,synicalsyntax/zulip,zulip/zulip,hackerkid/zulip,andersk/zulip,synicalsyntax/zulip,mahim97/zulip,zulip/zulip,andersk/zulip,rht/zulip,brainwane/zulip,Galexrt/zulip,verma-varsha/zulip,andersk/zulip,kou/zulip,brockwhittaker/zulip,synicalsyntax/zulip,dhcrzf/zulip,showell/zulip,eeshangarg/zulip,timabbott/zulip,jackrzhang/zulip,jackrzhang/zulip,shubhamdhama/zulip,jackrzhang/zulip,eeshangarg/zulip,showell/zulip,rishig/zulip,andersk/zulip,rishig/zulip,jackrzhang/zulip,rht/zulip,punchagan/zulip,jackrzhang/zulip,verma-varsha/zulip,timabbott/zulip,amanharitsh123/zulip,rishig/zulip,Galexrt/zulip,rishig/zulip,shubhamdhama/zulip,punchagan/zulip,hackerkid/zulip,punchagan/zulip,Galexrt/zulip,eeshangarg/zulip,showell/zulip,dhcrzf/zulip,timabbott/zulip,synicalsyntax/zulip,shubhamdhama/zulip,amanharitsh123/zulip,jackrzhang/zulip,brainwane/zulip,zulip/zulip,rht/zulip,tommyip/zulip,verma-varsha/zulip,punchagan/zulip,brainwane/zulip,kou/zulip,zulip/zulip,rht/zulip,zulip/zulip,dhcrzf/zulip,kou/zulip,showell/zulip,synicalsyntax/zulip,kou/zulip,andersk/zulip,andersk/zulip,tommyip/zulip,jackrzhang/zulip,eeshangarg/zulip,brockwhittaker/zulip,synicalsyntax/zulip,Galexrt/zulip,brainwane/zulip,amanharitsh123/zulip,brainwane/zulip,timabbott/zulip,Galexrt/zulip,brockwhittaker/zulip,timabbott/zulip,mahim97/zulip,showell/zulip,showell/zulip,Galexrt/zulip,tommyip/zulip,mahim97/zulip,rishig/zulip,brockwhittaker/zulip,amanharitsh123/zulip,tommyip/zulip,tommyip/zulip,shubhamdhama/zulip,timabbott/zulip,kou/zulip,mahim97/zulip,brockwhittaker/zulip,shubhamdhama/zulip,tommyip/zulip