[rhoai-3.4-ea.2] fix: add rhoai-version param to PR pipeline definitions

[jiridanek]

Summary

• Add missing rhoai-version: "3.4.0-ea.2" parameter to all 16 pull-request pipeline definitions
• Fixes Konflux PR build startup error: ERROR: RHOAI version is required but was not provided
• The push pipelines already had this param; the PR pipelines were missing it

Test plan

• Verify Konflux PR builds start successfully after this merge
• Retrigger builds on [rhoai-3.4-ea.2] run FORCE_LOCKFILES_UPGRADE=1 gmake refresh-lock-files #2052 and [rhoai-3.4-ea.2] lockfile refresh with protobuf pinned to keep IBM arch wheels #2053 once this is merged

🤖 Generated with Claude Code

Summary by CodeRabbit

• Chores
  • Updated build pipeline configurations to reference version 3.4.0-ea.2 across runtime and workbench container build processes.

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[coderabbitai]

🚥 Pre-merge checks | ✅ 3 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	PR description provides a clear summary and fix rationale, but lacks detailed testing information and self-checklist completion required by the template.	Complete the self-checklist items (confirm make test was run and testing details), add detailed testing instructions explaining how Konflux PR builds will be verified, and mark/complete all merge criteria checkboxes.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	Title uses imperative mood 'add', includes release tag reference [rhoai-3.4-ea.2], follows preferred format with scope (fix:), and accurately describes the main change.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Branch Prefix Policy	✅ Passed	PR title correctly starts with '[rhoai-3.4-ea.2] ' matching the target branch name as required by policy.

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✨ Finishing Touches

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[jiridanek]

/build-konflux