ci: also bump ai-review-prompts-ref input to 3f2300a3

The reusable-workflow `uses:` pin was bumped but the `ai-review-prompts-ref`
input (which selects the prompt/script checkout) still pointed at the old SHA,
so reviews would run new logic against old prompts. Caught by the Gemini review
on this PR. Now both refs match.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: heskew

.github/workflows/claude-review.yml

@@ -44,7 +44,7 @@ jobs:
       # introspect their own ref (`github.workflow_ref` resolves to the
       # CALLER's ref in `workflow_call` context), and `uses: …@<ref>`
       # is parsed literally so we can't interpolate a variable.
-      ai-review-prompts-ref: 2be0f702b114e39b90eed90962922ef64df58482
+      ai-review-prompts-ref: 3f2300a39910a0983eb74967dedeebd8c3c98adc
       review-layers: |
         universal
         harper/common

.github/workflows/gemini-review.yml

@@ -70,7 +70,7 @@ jobs:
       # duplication is unavoidable: reusable workflows can't introspect
       # their own ref (`github.workflow_ref` resolves to the CALLER's
       # ref in workflow_call context), and `uses: …@<ref>` is literal.
-      ai-review-prompts-ref: 2be0f702b114e39b90eed90962922ef64df58482
+      ai-review-prompts-ref: 3f2300a39910a0983eb74967dedeebd8c3c98adc
       review-layers: |
         universal
         harper/common