Remove text-shadow for tags in sidebar (#4245)

For consistency with tags in the main story river

themes/tiddlywiki/vanilla/base.tid

@@ -649,6 +649,10 @@ button.tc-tag-label, span.tc-tag-label {
 	border-radius: 1em;
 }
 
+.tc-sidebar-scrollable .tc-tag-label {
+	text-shadow: none;
+}
+
 .tc-untagged-separator {
 	width: 10em;
 	left: 0;