Before this commit, clicking on the button opened the emoji popover
then closed it immediately. This was because of a handler which said
that clicking on any part of the composer should focus the input
element. This is indeed required when the UI is blocked (thanks to
the `blockUI` function). Solution is to not force this focus when
clicking on any composer's button element.
To prevent breaking those two behaviors (blockUI focus and emoji), two
tests were implemented.
qsm-odoo
26e079f246