[FIX] *: remove flag Application on some apps

We decided to make this list as feature and not application.
It allows any user in mode OneAppFree to use them without become an
Extra App.

List of apps impacted:
    blog
    forum
    all payments acquirer

task-3062641

closes odoo/odoo#105787

Related: odoo/enterprise#33961
Signed-off-by: Thibault Francois <tfr@odoo.com>