Merge pull request #2397 from nextcloud-libraries/fix/filepicker-rounded-previews

fix(filepicker): Round previews in filepicker dialog

Author: susnux

lib/components/FilePicker/FileListIcon.module.scss

@@ -14,6 +14,7 @@
 	min-height: 32px;
 	background-repeat: no-repeat;
 	background-size: contain;
+	border-radius: var(--border-radius-small);
 	// for the fallback
 	display: flex;
 	justify-content: center;