Unexpected_rows_expectation doesn't give element_count in the validation results

[ayaan-ak-1]

Is your feature request related to a problem? Please describe.
When running a validation for unexpected_rows_expectation it is just giving unexpected_rows_list and the observed_value ( which has unexpected row count ). But it does not have element_count which can tell how many rows it evaluated.

Solution
Can there be any way i can see other values (like element_count) in the validation results

Additional context

In the UnexpectedRowsExpectation class (great_expectations/expectations/core/unexpected_rows_expectation.py)
the _validate function returns very few metrics as shown below

@override
def _validate(
    self,
    metrics: dict,
    runtime_configuration: dict | None = None,
    execution_engine: ExecutionEngine | None = None,
) -> Union[ExpectationValidationResult, dict]:
    metric_value = metrics["unexpected_rows_query.table"]
    unexpected_row_count = metrics["unexpected_rows_query.row_count"]
    observed_value = f"{unexpected_row_count} unexpected "
    if unexpected_row_count == 1:
        observed_value += "row"
    else:
        observed_value += "rows"
    return {
        "success": unexpected_row_count == 0,
        "result": {
            "observed_value": observed_value,
            "details": {"unexpected_rows": metric_value},
        },
    }

so can we update this to return even more important information in the results