Fix Special:Watchlist options for no-JS

Patch by putnik (see the Phab ticket) with tweaks by yours truly.

Bug: T225412
Change-Id: I23f05bc97929a196c62a0dc242ebace5c6fe45a0

resources/forms.less

@@ -58,3 +58,10 @@ div.editOptions {
 #wpTemplateSandboxPreview {
 	margin-left: 0.5em;
 }
+
+/* fixes for non-JavaScript filtering on Special:Watchlist
+ * @see https://phabricator.wikimedia.org/T225412
+ */
+.mw-special-Watchlist .mw-input-with-label {
+	display: inline-block;
+}