FIX-#7056: Update exception message for iloc/loc functions (#7057)

Signed-off-by: Anatoly Myachev <anatoly.myachev@intel.com>

modin/pandas/indexing.py

@@ -290,9 +290,7 @@ def _validate_key_length(self, key: tuple) -> tuple:  # noqa: GL08
                 if Ellipsis in key:
                     raise IndexingError(_one_ellipsis_message)
                 return self._validate_key_length(key)
-            raise IndexingError(
-                f"Too many indexers: you're trying to pass {len(key)} indexers to the {type(self.df)} having only {self.df.ndim} dimensions."
-            )
+            raise IndexingError("Too many indexers")
         return key
 
     def __getitem__(self, key):  # pragma: no cover

modin/pandas/test/dataframe/test_indexing.py

@@ -870,10 +870,20 @@ def test_iloc_empty():
     df_equals(pandas_df, modin_df)
 
 
-def test_iloc_loc_key_length():
+def test_iloc_loc_key_length_except():
     modin_ser, pandas_ser = pd.Series(0), pandas.Series(0)
-    eval_general(modin_ser, pandas_ser, lambda ser: ser.iloc[0, 0])
-    eval_general(modin_ser, pandas_ser, lambda ser: ser.loc[0, 0])
+    eval_general(
+        modin_ser,
+        pandas_ser,
+        lambda ser: ser.iloc[0, 0],
+        raising_exceptions=pandas.errors.IndexingError("Too many indexers"),
+    )
+    eval_general(
+        modin_ser,
+        pandas_ser,
+        lambda ser: ser.loc[0, 0],
+        raising_exceptions=pandas.errors.IndexingError("Too many indexers"),
+    )
 
 
 def test_loc_series():