Added support for S3 storage classes (#28319)

* Added support for S3 storage classes

* Added missing translations for S3 storage class

* Changed default storage class values to preserve original behaviour

* Changed storage class description and example

* Fix translations ordering

* Change configuration defaults to empty strings

* Remove redundant empty string check

* Validate storage class variable against constants from S3 API docs

* Validate export storage class against constants

* Use slices for config validation

* Applied patch for translation ordering

webapp/platform/types/src/config.ts

@@ -544,6 +544,7 @@ export type FileSettings = {
     AmazonS3Trace: boolean;
     AmazonS3RequestTimeoutMilliseconds: number;
     AmazonS3UploadPartSizeBytes: number;
+    AmazonS3StorageClass: string;
     DedicatedExportStore: boolean;
     ExportDriverName: string;
     ExportDirectory: string;
@@ -560,6 +561,7 @@ export type FileSettings = {
     ExportAmazonS3RequestTimeoutMilliseconds: number;
     ExportAmazonS3PresignExpiresSeconds: number;
     ExportAmazonS3UploadPartSizeBytes: number;
+    ExportAmazonS3StorageClass: string;
 };
 
 export type EmailSettings = {