v3.1: runtime: Rekey p-token feature gate (backport of #9979)

[mergify]

Problem

p-token feature needs a rekey to go with the changes in SIMD-0444 (#9891).

Summary of Changes

Rekey it. This PR also rekeys the expected program buffer key for the migration.

---

This is an automatic backport of pull request #9979 done by Mergify.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.2%. Comparing base (433a685) to head (62254c0).

Additional details and impacted files

@@            Coverage Diff            @@
##             v3.1   #10015     +/-   ##
=========================================
- Coverage    83.2%    83.2%   -0.1%     
=========================================
  Files         865      865             
  Lines      376152   376152             
=========================================
- Hits       313162   313154      -8     
- Misses      62990    62998      +8     

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[t-nelson]

who needs to sme here? we want this in before tomorrow so it lands in the mb upgrade candidate