[FIX] web_editor: fix duplicated pasted image summernote

Issue

        - Windows > Chrome or Firefox
        - Any chatter > Open full screen
        - Paste any image

        The image is pasted twice

Cause

        Summernote adds the image but
        the browser event adds it too

Solution

	I applied the fix that summernote did
	summernote/summernote/commit/6e432941af17c5fee0877d9ff54b6ace65fbdb4b

OPW-2267712

closes odoo/odoo#52512

X-original-commit: 62424875791dbe8432d61fe9b819daf6525045f3
Signed-off-by: Jason Van Malder (jvm) <jvm@odoo.com>