fix: set type button for edit filter icons

Co-authored-by: Yohan Boniface <[email protected]>

Author: davidbgk

umap/static/umap/css/form.css

@@ -99,7 +99,7 @@ select[multiple="multiple"] {
 }
 
 .button,
-[type="button"],
+[type="button"]:not(.icon),
 input[type="submit"] {
     display: flex;
     align-items: center;

umap/static/umap/js/modules/filters.js

@@ -107,7 +107,7 @@ export default class Filters {
       }
       const label = `
         <span>${Utils.escapeHTML(this.defined.get(name).label || field.key)}
-          <button class="icon icon-16 icon-edit show-on-edit" data-ref=editFilter></button>
+          <button type="button" class="icon icon-16 icon-edit show-on-edit" data-ref=editFilter></button>
         </span>`
       formFields.push([
         `selected.${name}`,