style: use min-width to set a minimal width for select2 widgets (#14273)

wcs/qommon/form.py

@@ -1871,7 +1871,6 @@ class JsonpSingleSelectWidget(Widget):
 $(document).ready(function() {
 $("#form_%(id)s").select2({
     minimumInputLength: 1,
-    width: '20em',
     %(allowclear)s
     language: {
       noResults: function () { return "%(nomatches)s"; },

wcs/qommon/static/css/qommon.css

@@ -364,6 +364,10 @@ div.block-edit-custom-text:hover a.edit-custom-text {
 	line-height: 20px;
 }
 
+span.select2-container {
+	min-width: 20em;
+}
+
 ul.select2-results {
 	text-align: left;
 }