GH-130614: pathlib ABCs: support alternate separator in full_match()
          #130991
        
          
      
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In
pathlib.types._JoinablePath.full_match(), treat alternate path separators in the path and pattern as if they were primary separators. e.g. if the parser isntpath, thenP(r'foo/bar\baz').full_match(r'*\*/*')is true.Testing will be covered by #130988.
pathlib.Path.copy()#130614