Fix yellow background on active elements in code review (#11414)

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

web_src/less/_base.less

@@ -1167,7 +1167,7 @@ i.icon.centerlock {
         width: 100%;
     }
 
-    .active {
+    .lines-code .active {
         background: #fff866;
     }
 }

web_src/less/themes/theme-arc-green.less

@@ -1137,7 +1137,7 @@ td.blob-excerpt {
     background-color: rgba(0, 0, 0, .15);
 }
 
-.code-view .active {
+.lines-code .code-view .active {
     background: #554a00;
 }