[mirotalksfu] - make widget fully configurable via config.js and .env

public/js/Widget.js

@@ -693,7 +693,11 @@ document.addEventListener('DOMContentLoaded', function () {
             position: autoInit.getAttribute('data-position') || MiroTalkWidget.DEFAULT_OPTIONS.supportWidget.position,
             checkOnline: autoInit.getAttribute('data-check-online') === 'true',
             expertImages: autoInit.getAttribute('data-expert-images')
-                ? autoInit.getAttribute('data-expert-images').split(',').map(url => url.trim()).filter(Boolean)
+                ? autoInit
+                      .getAttribute('data-expert-images')
+                      .split(',')
+                      .map((url) => url.trim())
+                      .filter(Boolean)
                 : MiroTalkWidget.DEFAULT_OPTIONS.supportWidget.expertImages,
             customMessages: {
                 heading: