[FIX] web: fix kanban tags overflow

Issue

	- Install Contacts
	- Add a tag on a contact like:
	  "LongTagName_Forcepaymentcomplement"
	  and give it a color
	- Go back to kanban view
	- Resize your window

	With some sizes, the tag gets out of
	the kanban box

Cause

	The tag is moved under the color ball
	when it is too long with some resolution

	But there is others resolutions where
	the tag is too long even if it is moved
	to the next line

Solution

	Add word-break: all which will force the
	tags to break if it is too long.

OPW-2251780

closes odoo/odoo#51222

Signed-off-by: Nicolas Lempereur (nle) <nle@odoo.com>