Add __all__ for modules beginning with 'u', 'x', 'w' and 'z' (#7374)

stdlib/xml/dom/minicompat.pyi

@@ -1,5 +1,7 @@
 from typing import Any, Iterable, TypeVar
 
+__all__ = ["NodeList", "EmptyNodeList", "StringTypes", "defproperty"]
+
 _T = TypeVar("_T")
 
 StringTypes: tuple[type[str]]

stdlib/xml/dom/xmlbuilder.pyi

@@ -4,6 +4,8 @@ from urllib.request import OpenerDirector
 from xml.dom.expatbuilder import ExpatBuilder, ExpatBuilderNS
 from xml.dom.minidom import Node
 
+__all__ = ["DOMBuilder", "DOMEntityResolver", "DOMInputSource"]
+
 # UNKNOWN TYPES:
 # - `Options.errorHandler`.
 #       The same as `_DOMBuilderErrorHandlerType`?