server-tab: Fix upper limit of generated shortcuts
server-tab: Fix upper limit of generated shortcuts

Signed-off-by: tarun8718 <ff6c042d415e6a227823a14fd3bd5ab566f99179@gmail.com>

zulip/zulip-desktop,zulip/zulip-desktop,zulip/zulip-desktop,zulip/zulip-desktop