Allow Additional Internal event properties on Frontend

What does this MR do and why?

In this MR, allowing value, label and property to be passed to snowplow, track_event API and browserSDK for Frontend.

Similar Backend MR - !142839 (merged)

How to set up and validate locally

1. Add below code in the last line of tracker/index.js, This will allow us to send track_event API call on any page in GDK.

InternalEvents.trackEvent('user_viewed_dashboard_list', undefined, {
    label: 'value',
    property: 'value',
    value: 2,
  });

Here is the patch

diff --git a/app/assets/javascripts/tracking/index.js b/app/assets/javascripts/tracking/index.js
index 2ee4703aa0b..058430338bc 100644
--- a/app/assets/javascripts/tracking/index.js
+++ b/app/assets/javascripts/tracking/index.js
@@ -73,4 +73,9 @@ export function initDefaultTrackers() {
   InternalEvents.bindInternalEventDocument();
   InternalEvents.trackInternalLoadEvents();
   InternalEvents.initBrowserSDK();
+  InternalEvents.trackEvent('user_viewed_dashboard_list', undefined, {
+    label: 'value',
+    property: 'value',
+    value: 2,
+  });
 }

2. Install snowplow debugger in the browser.
3. Refresh any page and verify value, label and property are being passed.

4. Verify that it is passed as an object additional_properties in track_event API call

5. If properties are other than value, label and property, it will throw an error.

Related to #434505 (closed)