rename sentry is environement variable to make it accessible in browser

sentryConfigUtil.js

@@ -1,6 +1,6 @@
-module.exports.isSentryEnabled = () => {
-    if (process.env.SENTRY_ENABLED) {
-        return process.env.SENTRY_ENABLED === 'yes';
+module.exports.getIsSentryEnabled = () => {
+    if (process.env.NEXT_PUBLIC_IS_SENTRY_ENABLED) {
+        return process.env.NEXT_PUBLIC_IS_SENTRY_ENABLED === 'yes';
     } else {
         if (process.env.NEXT_PUBLIC_SENTRY_ENV) {
             return process.env.NEXT_PUBLIC_SENTRY_ENV !== 'development';