[FIX] survey: adapt section rows for dark mode

This commit adapts the colors of section rows for dark mode.

task-2710677

X-original-commit: 9302f920b3d6f31bc2cf24a7ac47a49343cca7c4
Part-of: odoo/odoo#103162

addons/survey/__manifest__.py

@@ -99,6 +99,9 @@ sent mails with personal token for the invitation of the survey.
             'survey/static/src/scss/survey_question_views.scss',
             'survey/static/src/scss/survey_templates_results.scss',
         ],
+        "web.dark_mode_assets_backend": [
+            'survey/static/src/scss/*.dark.scss',
+        ],
         'web.assets_tests': [
             'survey/static/tests/tours/*.js',
         ],

addons/survey/static/src/scss/survey_survey_views.dark.scss

@@ -0,0 +1,7 @@
+// = Survey view
+// ============================================================================
+// No CSS hacks, variables overrides only
+
+.o_survey_form {
+    --SurveyForm__section-background-color: #{$o-gray-300};
+}

addons/survey/static/src/scss/survey_survey_views.scss

@@ -134,9 +134,13 @@
 // FORM view
 .o_survey_form table.o_section_list_view tr.o_data_row.o_is_section {
     font-weight: bold;
-    background-color: #DDD;
+    background-color: var(--SurveyForm__section-background-color, #DDD);
     border-top: 1px solid #BBB;
     border-bottom: 1px solid #BBB;
+    
+    > td {
+        background: transparent;
+    }
 }
 
 // TOOLS