org settings: Fix bug in edit user-name-form in active user setting.
org settings: Fix bug in edit user-name-form in active user setting.

In active user settings, when user click on user-name-form to edit
user's full name, we don't set any default value for full-name
input field, which results in garbage or falsy value in input field.

Set true value of selected user's full name in input field by default
in user-name-form.

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