Derive Auto-Evo task seeds from stable task identities

[ChevyLevi]

Brief Description of What This PR Does

Derive Auto-Evo task seeds from the world seed, applied generation, task type and owner ID, so unrelated task ordering no longer shifts their random streams. Includes seed-vector and task-binding regression tests.

Related Issues

Blocked by #7305; blocks #7309.

Progress Checklist

Note: before starting this checklist the PR should be marked as non-draft.

• PR author has checked that this PR works as intended and doesn't
  break existing features:
  https://wiki.revolutionarygamesstudio.com/wiki/Testing_Checklist
  (this is important as to not waste the time of Thrive team
  members reviewing this PR). This includes gameplay testing by the PR author.
• Initial code review passed (this and further items should not be checked by the PR author)
• Functionality is confirmed working by another person (see above checklist link)
• Final code review is passed and code conforms to the
  styleguide.

Before merging all CI jobs should finish on this PR without errors, if
there are automatically detected style issues they should be fixed by
the PR author. Merging must follow our
styleguide.

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