fix validation error on UI side + rollback BE changes

Author: Artem

redisinsight/api/src/modules/ssh/models/ssh-options.ts

@@ -67,6 +67,7 @@ export class SshOptions {
   })
   @Expose()
   @IsString({ always: true })
+  @IsNotEmpty()
   @IsOptional()
   passphrase?: string;
 }

redisinsight/ui/src/utils/comparisons/diff.ts

@@ -23,7 +23,7 @@ export const getFormUpdates = (obj1: UnknownObject = {}, obj2: UnknownObject = {
     obj1,
     (result: UnknownObject, value, key) => {
       if (isObject(value)) {
-        const diff = getFormUpdates(value, obj2[key])
+        const diff = getFormUpdates(value, obj2[key] || {})
 
         if (Object.keys(diff).length) {
           result[key] = diff