Align error message of _pyio.TextIOWrapper.seek with its C implementation

Lib/_pyio.py

@@ -2458,6 +2458,8 @@ def detach(self):
         return buffer
 
     def seek(self, cookie, whence=0):
+        self._checkClosed()
+
         def _reset_encoder(position):
             """Reset the encoder (merely useful for proper BOM handling)"""
             try:
@@ -2471,8 +2473,6 @@ def _reset_encoder(position):
                 else:
                     encoder.reset()
 
-        if self.closed:
-            raise ValueError("tell on closed file")
         if not self._seekable:
             raise UnsupportedOperation("underlying stream is not seekable")
         if whence == SEEK_CUR:

Misc/NEWS.d/next/Library/2025-01-15-23-51-44.gh-issue-128852.89wrex.rst

@@ -0,0 +1,2 @@
+Fix error message when calling seek on a closed :class:`_pyio.TextIOWrapper`
+file.