Enable back-end sorting of tasks by Veteran last name

[lowellrex]

#11247 established the pattern for how the pagination API will sort tasks for the queue on the back-end but did not enable sorting by all fields. This ticket exists to enable sorting by Veteran last name through the pagination API that mirrors how we sort by that field on the front-end.

🚫 Blocked by

• Enable back-end sorting of tasks by docket type and number Enable back-end sorting of tasks by docket type and number #11311
  • Enable back-end sorting of tasks by docket type and number #11311 will set up the framework that this ticket will extend by 1) creating a table that contains the cached attributes, 2) creating the job that runs regularly to populate that table, and 3) establishing the patterns for the statements that shuttle the appropriate data from VACOLS/Caseflow into the cached table.

Acceptance criteria

• Enable back-end sorting of tasks by Veteran last name