Add missing method of Variable::PasteBindingWithNewData and its type.

This was causing to fail on type check when we started to annotate `Variable` as a type.

PiperOrigin-RevId: 690614667

pytype/typegraph/cfg.pyi

@@ -41,6 +41,7 @@ class Variable:
   def AddBinding(self, data: Any) -> Binding: ...
   @overload
   def AddBinding(self, data: Any, source_set: Iterable[Binding], where: CFGNode) -> Binding: ...
+  def PasteBindingWithNewData(self, binding: Binding, data: Any) -> Binding: ...
   def AssignToNewVariable(self, where: Optional[CFGNode] = ...) -> Variable: ...
   def PasteVariable(self, variable: Variable, where: Optional[CFGNode] = ..., additional_sources: Optional[Iterable[Binding]] = ...) -> None: ...
   def PasteBinding(self, binding: Binding, where: Optional[CFGNode] = ..., additional_sources: Optional[Iterable[Binding]] = ...) -> None: ...