PERF-modin-project#7299: Use 'lazy_metadata_decorator' instead of 'sy…

…nchronize_labels' for 'combine' function

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

modin/core/dataframe/pandas/dataframe/dataframe.py

@@ -2882,6 +2882,7 @@ def explode(self, axis: Union[int, Axis], func: Callable) -> PandasDataframe:
             pandas_backend=self._pandas_backend,
         )
 
+    @lazy_metadata_decorator(apply_axis="both")
     def combine(self) -> PandasDataframe:
         """
         Create a single partition PandasDataframe from the partitions of the current dataframe.
@@ -2909,7 +2910,6 @@ def combine(self) -> PandasDataframe:
             dtypes=self.copy_dtypes_cache(),
             pandas_backend=self._pandas_backend,
         )
-        result.synchronize_labels()
         return result
 
     @lazy_metadata_decorator(apply_axis="both")