fix(server): skip smtp validation if unchanged (#12111)

* fix(server): skip smtp validation if unchanged

* update comparison + convert config to plain object

server/src/utils/object.ts

@@ -0,0 +1,15 @@
+import { isEqual, isPlainObject } from 'lodash';
+
+/**
+ * Deeply clones and converts a class instance to a plain object.
+ */
+export function toPlainObject<T extends object>(obj: T): T {
+  return isPlainObject(obj) ? obj : structuredClone(obj);
+}
+
+/**
+ * Performs a deep comparison between objects, converting them to plain objects first if needed.
+ */
+export function isEqualObject(value: object, other: object): boolean {
+  return isEqual(toPlainObject(value), toPlainObject(other));
+}