I didnt see this warning and updated to browser mod v2. You can not revert back from hacs but you can do it manually.
Delete <your config dir>/custom_components/browser_mod/ folder from Home Assistant
Download this file https://github.com/thomasloven/hass-browser_mod/archive/refs/tags/1.5.3.zip
copy the contents of custom_components/browser_mod/ from the downloaded zip to <your config dir>/custom_components/browser_mod/.
restart home assistant, you may may need to clear you browser cache to get it to work again.