fix(files_versions): author and label parsing fallback

Signed-off-by: John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>

apps/files_versions/src/utils/versions.ts

@@ -105,8 +105,8 @@ function formatVersion(version: any, fileInfo: any): Version {
 	return {
 		fileId: fileInfo.id,
 		// If version-label is defined make sure it is a string (prevent issue if the label is a number an PHP returns a number then)
-		label: version.props['version-label'] && String(version.props['version-label']),
-		author: String(version.props['version-author']) ?? null,
+		label: version.props['version-label'] ? String(version.props['version-label']) : '',
+		author: version.props['version-author'] ? String(version.props['version-author']) : null,
 		authorName: null,
 		filename: version.filename,
 		basename: moment(mtime).format('LLL'),