Usage of strict equality for consistency in condition

Author: laxerhd

src/main/webapp/app/lecture/lecture-unit/lecture-unit-management/attachment-unit-form/attachment-unit-form.component.ts

@@ -70,7 +70,7 @@ export class AttachmentUnitFormComponent implements OnChanges {
     private readonly statusChanges = toSignal(this.form.statusChanges ?? 'INVALID');
 
     isFormValid = computed(() => {
-        return this.statusChanges() === 'VALID' && !this.isFileTooBig() && this.nameControl?.value != '' && this.fileName();
+        return this.statusChanges() === 'VALID' && !this.isFileTooBig() && this.nameControl?.value !== '' && this.fileName();
     });
 
     ngOnChanges(): void {