Ensure filename is possibly centered below file icons in grid view

Signed-off-by: Jan-Christoph Borchardt <hey@jancborchardt.net>

Author: jancborchardt

apps/files/css/files.scss

@@ -843,6 +843,7 @@ table.dragshadow td.size {
 
 						.innernametext {
 							display: inline-block;
+							width: 100%;
 							max-width: 80px;
 						}