The tool to change background color in mass mailing will currently
set the CSS property as !important.
On outlook software (or windows mail app) this seems to fail:
- !important on inline CSS should not be used
In this fix we remove !important when inlining CSS.
opw-2641343
note: this forward-port is only taking half of 14.0 d7e5101603 since the
issue of targetting DIV elements does not apply here (the <div/> with
the background color are transformed in table in convert_inline.js).
closesodoo/odoo#82924
X-original-commit: fb675251ce8b13d36dfac7a50e9b1cea4759cc02
Signed-off-by: Nicolas Lempereur (nle) <nle@odoo.com>