[FIX] im_livechat: route /support loads correctly

Before this commit, when arriving on the route /im_livechat/support/1, there was a crash
in the console becauase boot.js was not found.
This was because the file has been moved, and im_livechat has not been adapted

After this commit, the route /support correctly works

closes odoo/odoo#73362

Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>

addons/im_livechat/__manifest__.py

@@ -94,7 +94,7 @@ Help your customers with this chat, and analyse their feedback.
             # Odoo JS Framework
             'web/static/lib/owl/owl.js',
             'web/static/src/legacy/js/promise_extension.js',
-            'web/static/src/js/boot.js',
+            'web/static/src/boot.js',
             'web/static/src/legacy/js/libs/download.js',
             'web/static/src/legacy/js/libs/content-disposition.js',
             'web/static/src/legacy/js/libs/pdfjs.js',