Python: Trigger property update in foreach_get/set

Calling `foreach_get/set` on a collection property did not trigger
a property update. In the attribute API, this lead to missing
updates after e.g. setting the values of an attribute.

This adds a call to `RNA_property_update` for the getter/setter
bpy rna function and adds a property update callback to all the
different attribute collection properties.

Pull Request: https://projects.blender.org/blender/blender/pulls/125518

source/blender/python/intern/bpy_rna.cc

@@ -5742,6 +5742,9 @@ static PyObject *foreach_getset(BPy_PropertyRNA *self, PyObject *args, int set)
     return nullptr;
   }
 
+  if (set) {
+    RNA_property_update(BPY_context_get(), &self->ptr, self->prop);
+  }
   Py_RETURN_NONE;
 }