*: im_livechat, website_livechat.
Before this commit, the `thread.insert` method received an arbitrary
`serverData` key. This was cumbersome since we needed to create this
key manually at each insertion.Moreover some attributes where coming from
dedicated keys, some from the serverData key, some from both which led
to a bug-prone, hard to maintain code.
This commit removes the `serverData` key in order to solve those
issues.
closesodoo/odoo#121117
Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>