[FIX] web_editor: use proper text color for dropdown items in cc envs

When inside a specific color preset, active dropdown items' background
color is set to that preset's primary color. However, their text color
was not properly computed mainly because of [1] which forced other rules
as important.

[1]: https://github.com/odoo/odoo/commit/2172295cefa1d8780332709bf0c97cfa23def3a5

closes odoo/odoo#74776

X-original-commit: 67fb206e2ef4828712a53052282aa0791edb74e7
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>

addons/web_editor/static/src/scss/web_editor.common.scss

@@ -727,7 +727,11 @@ blockquote {
                 &:active {
                     &, h6 { // Quick fix: sometimes we use h6 in dropdowns
                         @include gradient-bg($-btn-primary-color);
-                        color: color-yiq($-btn-primary-color);
+                        color: color-yiq($-btn-primary-color) !important;
+
+                        @include hover-focus {
+                            color: color-yiq($-btn-primary-color) !important;
+                        }
                     }
                 }
             }