fix: call onLiveEdit on registration only in builder

Avoid calling onLiveEdit in apps other than builder as it can lead to
multiple calls in Timeline and LP. Resolving this issue would then
require storing some state to ensure the callback is only called from
one code location on the first load which then has the posssibiliy of
breaking setups that rely on the behaviour of the callback being called
multiple times.

Author: faraazb-contentstack

src/preview/contentstack-live-preview-HOC.ts

@@ -156,10 +156,15 @@ class ContentstackLivePreview {
         const isLivePreviewSearchParamPresent =
             isWindowDefined &&
             new URLSearchParams(window.location.search).has("live_preview");
+        const isBuilder =
+            isWindowDefined &&
+            new URLSearchParams(window.location.search).has("builder");
+        const shouldCallCallback =
+            isLivePreviewSearchParamPresent && isBuilder;
         // calling onChangeCallback when live_preview search parameter
         // is present because we don't send the initial client-data-send
         //  message in visual builder
-        if (!skipInitialRender || isLivePreviewSearchParamPresent) {
+        if (!skipInitialRender || shouldCallCallback) {
             onChangeCallback();
         }