Stdlib: Zend named params for hash_update_stream/html/ob (#23786)

[PurHur]

Summary

• Map Zend stub names in lib/BuiltinParamNames.php for hash_update_stream (stream not InternalArgInfo handle), plus durable maps for hash_update, get_html_translation_table, and ob_get_status.
• Guards: unit test, VM/JIT compliance .phpt, and test/repro/issue_23786_html_hash_ob_named.php.
• Closes Regression: get_html_translation_table/hash_update*/ob_get_status named args rejected — Reflection OK or stream name drift (ext stubs) #23786 (php-src-strict; PHP-only — no C).

php-src reference

• ext/hash/hash.stub.php — hash_update / hash_update_stream
• ext/standard/html.stub.php / basic_functions.stub.php — get_html_translation_table / ob_get_status

Test plan

• ./script/docker-exec.sh -- bash -lc 'php bin/vm.php test/repro/issue_23786_html_hash_ob_named.php' → matches Zend
• vendor/bin/phpunit --filter testHtmlHashObNamedParamsResolve → OK (15 assertions)
• vendor/bin/phpunit --filter "named_args_hash_update_stream|named_args_html_ob_status" test/compliance/VMTest.php → OK
• same filter on JITTest.php → OK
• related named_args_hash_copy / named_args_hash_update_file still green

Verification transcript

html='"'
hash_ok
array (
)
stream_names=context,stream,length
stream_digest=30f088ea6673877c2e2c1edbe7513ff90eda9a6f

(VM and Zend identical.)

Not covered: full ci-fast / spine / north-star5 (pre-existing spine red for SoapHttpTransport.php on master — unrelated).

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