Squiz SFDC 02243309 — cache.put() hang repro (ESCALATION-5647)
modes:
  waitUntil-direct     HANG  raw match() body, put in ctx.waitUntil() -> cut at 30s (customer-exact)
  await-direct         HANG  raw match() body, awaited in request (20s worker cap)
  await-direct-diffkey HANG  raw match() body, awaited, put to a DIFFERENT key
  await-fetch-reuse    WORKS control: a fetch() body reused the identical way
  await-match-clone    WORKS cached.clone() then put
  await-stream         WORKS IdentityTransformStream pump (customer workaround)
  await-fixedlength    WORKS FixedLengthStream pump
  await-buffered       WORKS await arrayBuffer() then put