fix: the file in metadata type form is optional

src/app/features/admin/metadata-type/components/presentationals/admin-metadata-type-form/admin-metadata-type-form.presentational.html

@@ -125,7 +125,7 @@
             color="primary"
             type="submit"
             (keydown.enter)="onSubmit()"
-            [disabled]="!form.valid || !form.dirty"
+            [disabled]="form.invalid || (form.pristine && !this.uploadedOrChangedFile)"
     >
       {{'admin.metadataType.form.submit' | translate }}
     </button>

src/app/features/admin/metadata-type/components/presentationals/admin-metadata-type-form/admin-metadata-type-form.presentational.ts

@@ -37,6 +37,7 @@ export class AdminMetadataTypeFormPresentational extends SharedAbstractFormPrese
   readonly files: string = "files";
   readonly filesAccepted: string[] = [".xml", ".json", ".xsd", ".txt"];
   readonly maxSizeFile: number = 25000000;
+  uploadedOrChangedFile: boolean = false;
 
   metadataFormatEnum: KeyValue[] = MetadataTypeFormatEnumHelper.getListKeyValue();
 
@@ -95,6 +96,7 @@ export class AdminMetadataTypeFormPresentational extends SharedAbstractFormPrese
       this._notificationService.showInformation(TRANSLATE("admin.metadataType.readUploadedFileSuccessfully"));
     };
     fileReader.readAsText(file);
+    this.uploadedOrChangedFile = true;
   }
 
   onTestFileUpload(event: Event & any): void {