Provide bitmap from previous stages of queries to `RangeIndexReader`

If a bitmap of matching rows (so rows which can't match the query are absent from the bitmap) were passed in to `RangeIndexReader` it could be used by the v2 range index to skip work for rows which can't match.

Start by reading RangeIndexReader and the v2 range index implementation to understand how query stages currently select rows. Trace where the bitmap of matching rows is available from previous stages and determine the integration points for passing it into the reader. Done means the v2 range index can use that bitmap to skip rows that cannot match, with behavior covered by relevant tests.

Written by the indexing model from the issue text.