Function get_indices_of_exprs_strict 

pub fn get_indices_of_exprs_strict<T>(
    targets: impl IntoIterator<Item = T>,
    items: &[Arc<dyn PhysicalExpr>],
) -> Vec<usize>
where
    T: Borrow<Arc<dyn PhysicalExpr>>,

This function finds the indices of targets within items using strict equality.