[cherry-pick] Add PatchBased02UnifiedEagerness prompt strategy - #334978

PR classified as team-member.

⚠️ Head commit is NOT signed by a trusted team member, so the full 2-approval requirement applies. (Head commit author bstee615 is not a trusted signer.)

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✅ Collaborator approvals: 2/2 (benibenj, dmitrivMS).

✅ No newly added runnable binary files.

✅ No protected engineering system files changed.