The normal flow to render a template is now to use `render_public_asset`
which bypasses the read access rights if the user matches the groups
the view declares.
For public users, we still cannot use that as they do not have access
to calling model methods at all. The route `public_render_template` is
thus still needed, but it should use the `render_public_asset` util.
Related to task-2412544
closesodoo/odoo#64167
X-original-commit: 3fd40ba2030fef7dccf4046a932e3b3a172dc53f
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>