dialog_widget: Remove redundant `preventDefault` calls.

Removes redundant `preventDefault` and `stopPropagation` calls for the
users of `dialog_widget.ts` module since we are already calling those
functions in the submit button click handler now.

web/src/alert_words_ui.js

@@ -42,10 +42,7 @@ function update_alert_word_status(status_text, is_error) {
     $alert_word_status.show();
 }
 
-function add_alert_word(e) {
-    e.preventDefault();
-    e.stopPropagation();
-
+function add_alert_word() {
     const alert_word = $("#add-alert-word-name").val().trim();
 
     if (alert_words.has_alert_word(alert_word)) {

web/src/settings_account.js

@@ -563,9 +563,7 @@ export function set_up() {
         e.preventDefault();
         e.stopPropagation();
 
-        function validate_input(e) {
-            e.preventDefault();
-            e.stopPropagation();
+        function validate_input() {
             const old_password = $("#old_password").val();
             const new_password = $("#new_password").val();
 
@@ -618,9 +616,7 @@ export function set_up() {
         }
     });
 
-    function do_change_password(e) {
-        e.preventDefault();
-        e.stopPropagation();
+    function do_change_password() {
         const $change_password_error = $("#change_password_modal").find("#dialog_error");
         $change_password_error.hide();
 
@@ -683,9 +679,7 @@ export function set_up() {
         );
     });
 
-    function do_change_email(e) {
-        e.preventDefault();
-        e.stopPropagation();
+    function do_change_email() {
         const $change_email_error = $("#change_email_modal").find("#dialog_error");
         const data = {};
         data.email = $("#change_email_form").find("input[name='email']").val();

web/src/settings_bots.js

@@ -292,10 +292,7 @@ export function add_a_new_bot() {
         });
     }
 
-    function validate_input(e) {
-        e.preventDefault();
-        e.stopPropagation();
-
+    function validate_input() {
         const bot_short_name = $("#create_bot_short_name").val();
 
         if (is_local_part(bot_short_name)) {

web/src/settings_emoji.js

@@ -200,10 +200,7 @@ export function add_custom_emoji_post_render() {
 function show_modal() {
     const html_body = render_add_emoji();
 
-    function add_custom_emoji(e) {
-        e.preventDefault();
-        e.stopPropagation();
-
+    function add_custom_emoji() {
         dialog_widget.show_dialog_spinner();
 
         const $emoji_status = $("#dialog_error");

web/src/settings_user_groups_legacy.js

@@ -300,10 +300,7 @@ export function populate_user_groups() {
     }
 }
 
-export function add_user_group(e) {
-    e.preventDefault();
-    e.stopPropagation();
-
+export function add_user_group() {
     const $user_group_status = $("#dialog_error");
 
     const group = {

web/src/stream_edit.js

@@ -452,8 +452,6 @@ export function initialize() {
     });
 
     function save_stream_info(e) {
-        e.preventDefault();
-        e.stopPropagation();
         const sub = get_sub_for_target(e.currentTarget);
 
         const url = `/json/streams/${sub.stream_id}`;

web/src/user_group_edit.js

@@ -261,8 +261,6 @@ export function initialize() {
     });
 
     function save_group_info(e) {
-        e.preventDefault();
-        e.stopPropagation();
         const group = get_user_group_for_target(e.currentTarget);
 
         const url = `/json/user_groups/${group.id}`;