settings_user: Fix event propagation for bot and user edit form modal.
settings_user: Fix event propagation for bot and user edit form modal.

When the user clicks a button that opens a modal, and if we don't break off
the corresponding click event. This condition in the global click handler
will become true and enables all mouse events outside modal.

```js
    $(document).on('click', function (e) {
        ...
        // If user clicks outside an active modal
        if ($('.modal.in').has(e.target).length === 0) {
            // Enable mouse events for the background as the modal closes
            $('.overlay.show').attr("style", null);
        }
```

Related to #12369.

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