The commands `ADD_GLOBAL_FILTER` and `EDIT_GLOBAL_FILTER` had the filter id
once in cmd.id, and once in cmd.filter.id. This made it possible to send
a command with 2 different ids, which can have arbitrary behaviour depending
on the implementation details of the command.
Changed it so we only use cmd.filter.id, and removed the cmd.id field. Also
simplified the commands helpers for the tests.
Task: 3502684
Part-of: odoo/odoo#135869
Adrien Minne (adrm)
5063e2a1e5