MSHTML.Body NVDAObject: Override shouldAllowIAccessibleFocusEvent pro…

…perty to call the property on the MSAAHTML Registered Handler client after checking the focused state on itself. This is because we override parent to skip this client, but this client might have the focused state, even if the document doesn't for some reason. This might improve the situation in #657.

source/NVDAObjects/IAccessible/MSHTML.py

@@ -649,6 +649,13 @@ def _get_parent(self):
 		else:
 			return parent
 
+	def _get_shouldAllowIAccessibleFocusEvent(self):
+		# We must override this because we override parent to skip the MSAAHTML Registered Handler client,
+		# which might have the focused state.
+		if controlTypes.STATE_FOCUSED in self.states:
+			return True
+		return super(Body, self).parent.shouldAllowIAccessibleFocusEvent
+
 class Object(MSHTML):
 
 	def _get_firstChild(self):