Fix broken DOM inspector [regression]

Regression from:
- 0bcf04d3dd

Related feedback:
- https://github.com/gorhill/uBlock/commit/0bcf04d3dda2#commitcomment-38594585

The DOM inspector client code is injected as
content script, thus it must be categorized as
non-privileged code.

platform/chromium/vapi-background.js

@@ -982,7 +982,6 @@ vAPI.messaging = {
             break;
         }
         case 'extendClient':
-            if ( fromDetails.privileged !== true ) { break; }
             vAPI.tabs.executeScript(tabId, {
                 file: '/js/vapi-client-extra.js',
             }).then(( ) => {

src/css/logger-ui-inspector.css

@@ -28,7 +28,6 @@
     background-color: #fee;
     }
 #domInspector li > * {
-    font-size: 0.8rem;
     display: inline-block;
     line-height: 1.2;
     margin-right: 1em;