fix: prevent feature.edit to be called twice on polygon/line end edit

When finishing drawing a polygon/line, Leaflet.Editable will send
both `editable:drawing:end` and `editable:drawing:commit`. In normal
flow, we only need to listen to the later, and we only need to
listen for the former in the case of pressing escape while drawing.

umap/static/umap/js/umap.controls.js

@@ -666,7 +666,7 @@ const ControlsMixin = {
       const connectedPeersCount = L.DomUtil.createButton(
         'leaflet-control-connected-peers',
         rightContainer,
-        '',
+        ''
       )
       L.DomEvent.on(connectedPeersCount, 'mouseover', () => {
         this.tooltip.open({
@@ -1182,17 +1182,6 @@ U.Editable = L.Editable.extend({
   initialize: function (map, options) {
     L.Editable.prototype.initialize.call(this, map, options)
     this.on('editable:drawing:click editable:drawing:move', this.drawingTooltip)
-    this.on('editable:drawing:end', (event) => {
-      this.map.tooltip.close()
-      // Leaflet.Editable will delete the drawn shape if invalid
-      // (eg. line has only one drawn point)
-      // So let's check if the layer has no more shape
-      if (!event.layer.feature.hasGeom()) {
-        event.layer.feature.del()
-      } else {
-        event.layer.feature.edit()
-      }
-    })
     // Layer for items added by users
     this.on('editable:drawing:cancel', (event) => {
       if (event.layer instanceof U.LeafletMarker) event.layer.feature.del()
@@ -1322,4 +1311,19 @@ U.Editable = L.Editable.extend({
     L.DomEvent.stop(e)
     e.cancel()
   },
+
+  onEscape: () => {
+    this.once('editable:drawing:end', (event) => {
+      this.map.tooltip.close()
+      // Leaflet.Editable will delete the drawn shape if invalid
+      // (eg. line has only one drawn point)
+      // So let's check if the layer has no more shape
+      if (!event.layer.feature.hasGeom()) {
+        event.layer.feature.del()
+      } else {
+        event.layer.feature.edit()
+      }
+    })
+    this.stopDrawing()
+  },
 })

umap/static/umap/js/umap.js

@@ -563,7 +563,7 @@ U.Map = L.Map.extend({
         if (this.importer.dialog.visible) {
           this.importer.dialog.close()
         } else if (this.editEnabled && this.editTools.drawing()) {
-          this.editTools.stopDrawing()
+          this.editTools.onEscape()
         } else if (this.measureTools.enabled()) {
           this.measureTools.stopDrawing()
         } else if (this.fullPanel?.isOpen()) {