typing: suppress a few pyi-errors with more recent pytype

Not sure what's going on here, but these were flagged with pytype 2022.03.21.
We can't update to something much more recent, because newer versions complain
about various `attr` uses.

mercurial/hgweb/__init__.py

@@ -18,12 +18,15 b' from .. import ('
 
 from ..utils import procutil
 
+# pytype: disable=pyi-error
 from . import (
     hgweb_mod,
     hgwebdir_mod,
     server,
 )
 
+# pytype: enable=pyi-error
+
 
 def hgweb(config, name=None, baseui=None):
     """create an hgweb wsgi object

mercurial/subrepo.py

@@ -1150,7 +1150,7 b' class svnsubrepo(abstractsubrepo):'
         # commit revision so we can compare the subrepo state with
         # both. We used to store the working directory one.
         output, err = self._svncommand([b'info', b'--xml'])
-        doc = xml.dom.minidom.parseString(output)
+        doc = xml.dom.minidom.parseString(output)  # pytype: disable=pyi-error
         entries = doc.getElementsByTagName('entry')
         lastrev, rev = b'0', b'0'
         if entries:
@@ -1174,7 +1174,7 b' class svnsubrepo(abstractsubrepo):'
         """
         output, err = self._svncommand([b'status', b'--xml'])
         externals, changes, missing = [], [], []
-        doc = xml.dom.minidom.parseString(output)
+        doc = xml.dom.minidom.parseString(output)  # pytype: disable=pyi-error
         for e in doc.getElementsByTagName('entry'):
             s = e.getElementsByTagName('wc-status')
             if not s:
@@ -1319,7 +1319,7 b' class svnsubrepo(abstractsubrepo):'
     @annotatesubrepoerror
     def files(self):
         output = self._svncommand([b'list', b'--recursive', b'--xml'])[0]
-        doc = xml.dom.minidom.parseString(output)
+        doc = xml.dom.minidom.parseString(output)  # pytype: disable=pyi-error
         paths = []
         for e in doc.getElementsByTagName('entry'):
             kind = pycompat.bytestr(e.getAttribute('kind'))