[FIX] web_editor: o_table, fix and adapt border for dark mode

Prior to this commit, the table border color was only applied to the
columns (left and right borders).

This commit applies the border color to all borders and adapt the color
to be consistent with the dark mode.

task-2710677

closes odoo/odoo#103162

X-original-commit: fc8a0653c2e98cbda9c1ff60f3a5ea7347aadd48
Related: odoo/enterprise#32786
Signed-off-by: Adrien Dieudonné (adr) <adr@odoo.com>
Signed-off-by: Pierre Paridans (app) <app@odoo.com>

addons/web_editor/__manifest__.py

@@ -91,6 +91,7 @@ Odoo Web Editor widget.
             'web_editor/static/src/components/**/*',
         ],
         'web_editor.assets_tests_styles': [
+            ('include', 'web._assets_helpers'),
             'web_editor/static/src/js/editor/odoo-editor/src/base_style.scss',
             'web_editor/static/src/js/editor/odoo-editor/src/checklist.scss',
         ],

addons/web_editor/static/src/js/editor/odoo-editor/src/base_style.scss

@@ -1,9 +1,12 @@
 li.oe-nested {
     display: block;
 }
-.o_table tr td {
-    padding: 0.5rem;
-    border-color: #c9ccd2;
+.o_table tr {
+    border-color: $o-gray-300;
+
+    td {
+        padding: 0.5rem;
+    }
 }
 .oe-tabs {
     display: inline-block;