After https://github.com/odoo/odoo/pull/78439 and before this commit, the `activeRtcSession` was a field of `callView` which is the same view for all channels. Which means that setting an `activeRtcSession` would display it for any channel instead of only the channel that hosted this session. This commit fixes this issue by moving the field to the `Channel` model. closes odoo/odoo#99270 Signed-off-by: Alexandre Kühn (aku) <aku@odoo.com>