Function append_right_indices 

pub(crate) fn append_right_indices(
    left_indices: UInt64Array,
    right_indices: UInt32Array,
    adjust_range: Range<usize>,
    preserve_order_for_right: bool,
) -> Result<(UInt64Array, UInt32Array)>

Appends right indices to left indices based on the specified order mode.

The function operates in two modes:

1. If preserve_order_for_right is true, probe matched and unmatched indices are inserted in order using the append_probe_indices_in_order() method.
2. Otherwise, unmatched probe indices are simply appended after matched ones.

Parameters

• left_indices: UInt64Array of left indices.
• right_indices: UInt32Array of right indices.
• adjust_range: Range to adjust the right indices.
• preserve_order_for_right: Boolean flag to determine the mode of operation.

Returns

A tuple of updated UInt64Array and UInt32Array.