fix: ensure the inset stage only begins if one or more faces have bee…

…n selected when using the panel operator

sketching/panel.py

@@ -94,7 +94,7 @@ def modal(self, context, event):
                     self.dirty = True
 
         elif self.stage == 0 and self.key_confirm_alternative:
-            if self.stage == 0:
+            if self.has_valid_selection(context):
                 self.isolate_geometry(context)
                 self.stage = 1
                 self.dirty = True
@@ -220,6 +220,13 @@ def inset_faces(self, faces):
             use_outset=False)
 
 
+    def has_valid_selection(self, context):
+        mesh = bmesh.from_edit_mesh(context.object.data)
+        selected_faces = len([f for f in mesh.faces if f.select])
+
+        return selected_faces > 0
+
+
     def finish(self, context):
         bpy.ops.object.mode_set(mode='OBJECT')
         self.panel_obj.show_in_front = False