fix: always unset editedFeature on editPanel close

And only this panel.

This was creating a weird bug, steps to reproduce:

- create a marker
- shift-click on the marker to edit the layer (so without explicitly
  closing the panel)
- try to type the layer name: the panel would close

This is also because currently the schema and render() are too
dump, and when any `name` is changed then the `data` reflow is
called, while it should not when editing the datalayer name.

We want to:
- have more targeted schema
- have more specific reflow in render

But that's for other PRs!

umap/static/umap/js/modules/rendering/ui.js

@@ -32,8 +32,10 @@ const FeatureMixin = {
     if (map.editedFeature === this.feature) {
       this.feature._marked_for_deletion = true
       this.feature.endEdit()
+      if (map.editedFeature === this.feature) {
         map.editPanel.close()
       }
+    }
   },
 
   _removeIcon: function () {

umap/static/umap/js/modules/ui/panel.js

@@ -25,6 +25,9 @@ export class Panel {
   }
 
   open({ content, className, actions = [] } = {}) {
+    if (this.isOpen()) {
+      this.onClose()
+    }
     this.container.className = `with-transition panel window ${this.className} ${
       this.mode || ''
     }`
@@ -71,10 +74,13 @@ export class Panel {
 
   close() {
     document.body.classList.remove(`panel-${this.className.split(' ')[0]}-on`)
+    this.onClose()
+  }
+
+  onClose() {
     if (DomUtil.hasClass(this.container, 'on')) {
       DomUtil.removeClass(this.container, 'on')
       this.map.invalidateSize({ pan: false })
-      this.map.editedFeature = null
     }
   }
 }
@@ -84,6 +90,11 @@ export class EditPanel extends Panel {
     super(map)
     this.className = 'right dark'
   }
+
+  onClose() {
+    super.onClose()
+    this.map.editedFeature = null
+  }
 }
 
 export class FullPanel extends Panel {