This commit revamps the invite type section of the "Invite user" modal
to provide a more intuitive user experience. The section now includes a
radio button option with two choices: "Send an email" and "Generate an
invite link." The email input box is hidden when the "Generate an invite
link" option is selected.
Fixes#24692.
We now add a checkbox in "Steams they should join" to directly
select all default streams in the realm for the invite.
We hide the stream list if that option is selected.
Removes undefined `time_input` from `invite_users_modal.hbs`.
The default input value for the expiration custom time limit is
not set until the "custom" option is selected from the dropdown.
Removes the undefined `csrf_input` from the same template. And
imports `csrf.ts` into `invite.js` to get the csrf token and
add it to the request data, which is the current pattern used
in other `/web/src` modules.
Akarsh Jain
Sahil Batra
Lauryn Menard
Ganesh Pawar