ref(ember): Fix merging of runtime config with environment config. (#3563)

Runtime config initially was meant to act as an override, but moving forward we want to be able to support it accepting the usual Sentry init config so that passing functions is possible.

Author: k-fish

packages/ember/addon/index.ts

@@ -17,7 +17,9 @@ export function InitSentryForEmber(_runtimeConfig: BrowserOptions | undefined) {
   assert('Missing configuration.', config);
   assert('Missing configuration for Sentry.', config.sentry || _runtimeConfig);
 
-  const initConfig = Object.assign({}, config.sentry, _runtimeConfig || {});
+  // Permanently merge options into config, preferring runtime config
+  Object.assign(config.sentry, _runtimeConfig || {});
+  const initConfig = Object.assign({}, config.sentry);
 
   initConfig._metadata = initConfig._metadata || {};
   initConfig._metadata.sdk = {