[FIX] web: use different hotkeys for 'ADD' and 'SAVE' buttons

A modal using the 'ADD' and 'SAVE' buttons will have the same keyboard
shortcut for both of these buttons

Steps to reproduce:
1. Install Inventory
2. Go to Inventory > Operations > Transfers and open a transfer with a
contact and in status 'Ready'
3. Click on 'EDIT' and open the contact in the Delivery Address with the
quick edit button
4. Push on 'Alt' key: the 'ADD' and 'SAVE' buttons use the same shortcut

Solution:
Modify the current hotkey used for button 'SAVE'

opw-2954146

closes odoo/odoo#98884

X-original-commit: 0f8d28269f4900e70d7fefbb359580390656cdf7
Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>
Signed-off-by: Guillaume Merlin (megu) <megu@odoo.com>

addons/web/static/src/legacy/js/views/view_dialogs.js

@@ -135,7 +135,7 @@ var FormViewDialog = ViewDialog.extend({
                 options.buttons.unshift({
                     text: options.save_text || (multi_select ? _t("Save & Close") : _t("Save")),
                     classes: "btn-primary",
-                    hotkey: 'c',
+                    hotkey: 's',
                     click: function () {
                         self._save().then(self.close.bind(self));
                     }