php-in-php: OpensslEncryptRuntime NestedJIT via JitVmHelperLink (#22683)

[PurHur]

Summary

• Route OpensslEncryptJitHelper compile through JitVmHelperLink::ensureCompiled (peer OpensslDigest php-in-php: OpensslDigestRuntime NestedJIT → JitVmHelperLink::ensureCompiled (#1492) #22554 / MathModf php-in-php: MathModf NestedJIT → JitVmHelperLink::ensureCompiled (#1492) #22519).
• Drop hand-rolled NestedJitCompileScope::run + parseAndCompile + new JIT() from OpensslEncryptRuntime.
• Add OpensslEncryptRuntimeShrinkTest; update standalone assert to match Digest shape.

Net shrink: OpensslEncryptRuntime.php −34 lines of NestedJIT boilerplate (shared path in JitVmHelperLink). No new C.

Closes #22683

Verification (exact)

$ php script/bootstrap-inventory.php --check
OK 6455/6455

$ ./script/docker-exec.sh -- bash -lc 'make bootstrap-selfhost-link'
bootstrap-selfhost-link: OK /compiler/build/selfhost
EXIT:0

$ ./script/docker-exec.sh -- bash -lc 'source script/php-env.sh && vendor/bin/phpunit test/unit/OpensslEncryptRuntimeShrinkTest.php'
OK (2 tests, 10 assertions)

$ ./script/docker-exec.sh -- bash -lc 'source script/php-env.sh && vendor/bin/phpunit test/unit/JIT/OpensslEncryptRuntimeStandaloneTest.php'
OK (2 tests, 13 assertions)   # includes ensureLinked ABI registration

$ make bootstrap-selfhost-vm-driver-execute-probe
bootstrap-selfhost-vm-driver-execute-probe: OK /compiler/build/selfhost-lib-spine-smoke
PROBE_EXIT:0

Test plan

• Shrink + standalone unit tests (Docker)
• make bootstrap-selfhost-vm-driver-execute-probe
• inventory --check OK 6455/6455
• make bootstrap-selfhost-link OK (pre-claim pillar 1)

[PurHur]

Cleanup hygiene

Deleting remote branch agent/runtime-php-openssl-encrypt-helperlink.

Reason: PR merged into master (#22684 / fc102217e); issue #22683 closed; no open PR on this head.

Open PR #22717 (agent/issue-22642-gen0-refresh-oom) and release/v1.1.0-dev left untouched.