show delete button file input by default

show delete button by default.

Closes HEDERA-128

projects/solidify-frontend/src/lib/input/containers/file-upload-input/file-upload-input.container.ts

@@ -233,7 +233,7 @@ export class FileUploadInputContainer extends AbstractInternalContainer implemen
   }
 
   get displayDeleteButton(): boolean {
-    return !this.readonly && isNotNullNorUndefined(this.internalFile) && this.allowDelete;
+    return this.readonly && isNotNullNorUndefined(this.internalFile) && this.allowDelete;
   }
 
   get displayDownloadButton(): boolean {
@@ -450,6 +450,8 @@ export class FileUploadInputContainer extends AbstractInternalContainer implemen
       fileExtension: FileVisualizerHelper.getFileExtension(this.internalFile.name),
     });
   }
+
+  protected readonly isNotNullNorUndefined = isNotNullNorUndefined;
 }
 
 export type SolidifyTypeFile =