Enable HMR depending on debug mode

[onny]

Currently Nextlouc needs to get patched to use Vue Devtools due to "hot module reloading" is restricted, see

• https://github.com/nextcloud-libraries/nextcloud-vue?tab=readme-ov-file#using-vue-devtools-in-firefox
• https://github.com/nextcloud/hmr_enabler

This PR loosens security on debug mode and makes Vue Devtools usable

Summary

TODO

• [ ] Need to test it
• [ ] Need to sign it

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• [ ] Tests (unit, integration, api and/or acceptance) are included
• [ ] Screenshots before/after for front-end changes
• [ ] Documentation (manuals or wiki) has been updated or is not required
• [ ] Backports requested where applicable (ex: critical bugfixes)