Fix Page Editor hang on canvas click (TreeviewSelect feedback loop)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app_state.py

@@ -8,7 +8,7 @@ so later rebinding would only ever be seen by the module that did it.
 import configparser
 import os
 
-VERSION = "0.0.0.124"
+VERSION = "0.0.0.125"
 PROPERTIES_FILE = os.path.join(os.path.dirname(os.path.abspath(__file__)), "editor.properties")
 DEFAULT_GRID_SIZE = 10
 DEFAULT_ADD_TIMESTAMP = True

ox_page_view.py

@@ -397,8 +397,11 @@ class OxPageViewPanel:
 
         for iid, comp in self._tree_items.items():
             if comp is widget:
-                self._tree.selection_set(iid)
+                # selection_set always fires <<TreeviewSelect>>, which calls
-                self._tree.see(iid)
+                # back into _select_widget — only set it when it changes.
+                if self._tree.selection() != (iid,):
+                    self._tree.selection_set(iid)
+                    self._tree.see(iid)
                 break
 
         name = widget.get("name", "?")