AOT: TypeError on ++/-- of live fopen resources (#23777)

[PurHur]

Summary

• Closes AOT: ++/-- on a live resource silently succeeds instead of raising TypeError (#6396 guard never fires at top-level scope) #23777 — AOT ++$fh after fopen('php://memory','r+') now raises TypeError: Cannot increment resource (exit 255) instead of printing no error.
• Root cause on current master: NestedJIT of StreamIoJitHelper treated VmFs::fopen as an ExternalMethod null stub ((int)null === 0), so there was no live resource for guardIncDecResourceOperand() to reject. The Language: increment/decrement on resource — TypeError parity (zend_operators.c) #6396 guard hole for some operand shapes is also covered.
• Fix: shared JitOpenStreamHandles NestedJIT registry for php://memory|temp opens, wired into StreamIo + StreamLifecycle helper bundles; broaden ++/-- resource guard; standalone AOT uses phpc_jit_abort_if_pending_type_error (Zend-like fatal + rc 255).

php-src reference

• Zend/zend_operators.c — increment/decrement on resources → TypeError

Test plan

• Issue repro (exact):

  export PHP_COMPILER_LLVM_PATH="$(pwd)/.llvm"
  export LD_LIBRARY_PATH="$(pwd)/.llvm:$(pwd)/.llvm/lib:${LD_LIBRARY_PATH:-}"
  cat > /tmp/repro_inc_res.php <<'PHP'
  <?php
  $fh = fopen("php://memory", "r+");
  ++$fh;
  echo "no error\n";
  PHP
  PHP_COMPILER_HELPER_RUNTIME_O=0 ./phpc build -o /tmp/repro_inc_res /tmp/repro_inc_res.php
  /tmp/repro_inc_res; echo rc=$?

  Observed: stderr PHP Fatal error: Uncaught TypeError: Cannot increment resource, rc=255 (was no error / rc=0).
• script/differential-sweep.sh --dir with g07_inc_resource.php — VM matches Zend
• ./script/phpunit.sh --filter 'StreamIoRuntimeStandaloneTest|StreamLifecycleRuntimeStandaloneTest' — OK (3 tests)
• Not run: full ci-local / north-star5-verify --strict

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