runtime: Rekey p-token feature gate

[febo]

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.

[mergify]

Backports to the beta branch are to be avoided unless absolutely necessary for fixing bugs, security issues, and perf regressions. Changes intended for backport should be structured such that a minimum effective diff can be committed separately from any refactoring, plumbing, cleanup, etc that are not strictly necessary to achieve the goal. Any of the latter should go only into master and ride the normal stabilization schedule. Exceptions include CI/metrics changes, CLI improvements and documentation updates on a case by case basis.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.5%. Comparing base (386c635) to head (b941f8d).
⚠️ Report is 3 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #9979   +/-   ##
=======================================
  Coverage    82.5%    82.5%           
=======================================
  Files         846      846           
  Lines      316799   316799           
=======================================
+ Hits       261573   261608   +35     
+ Misses      55226    55191   -35     

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[t-nelson]

damn how'd i miss this...

in the future try to rekey in the pr that makes the change to gated logic. this makes it more difficult for us to botch backports