Now that users can collect partial statistics at the extremes of columns using CREATE STATISTICS ON <col_name> FROM <table_name> USING EXTREMES, ensure that statements bundles include both full statistics and partial statistics.

The other thing we need to be sure of is that merged statistics are correctly created when injecting statment bundle stats so that we can mimic customer behavior.

Jira issue: CRDB-22695

Epic CRDB-25383