Fix rank method with nullable int

Author: tqa236

pandas/core/arrays/base.py

@@ -2206,7 +2206,7 @@ def _rank(
             raise NotImplementedError
 
         return rank(
-            self._values_for_argsort(),
+            self,
             axis=axis,
             method=method,
             na_option=na_option,

pandas/core/arrays/masked.py

@@ -1057,8 +1057,8 @@ def factorize(
         return codes, uniques_ea
 
     @doc(ExtensionArray._values_for_argsort)
-    def _values_for_argsort(self) -> np.ndarray:
-        return type(self)(self._data, self._mask)
+    def _values_for_argsort(self) -> Self:
+        return self._data
 
     def value_counts(self, dropna: bool = True) -> Series:
         """