php-in-php: lazy StringFormat from ensureFullStandaloneBodies (#35130)

[PurHur]

Summary

• Drop StringFormat::ensureStandaloneBodies from Context::ensureFullStandaloneBodies so thin/full standalone init no longer NestedJITs __compiler_sprintf / __compiler_printf / __compiler_number_format (Trust / Release v1.1.0: fix cold-build-check compile_failed on hello world (LLVM Module.php line 180; re-#24302) #32122 .1 mint class; peer php-in-php: drop Context ensureFullStandaloneBodies always-on StringGetenv/StringGetenvAll — lazy at JitEnv (ext/standard/basic_functions.c) #35127).
• Call sites already implementIfDeclared / ensureLinked (JitSprintf / JitPrintf / JitNumberFormat / …). php-src: ext/standard/formatted_print.c.
• Guard test + peer shrink tests updated; no new runtime/*.c.

Closes #35130

Test plan

• ./script/phpunit.sh --filter 'ContextFullStandaloneLazyStringFormatShrinkTest|ContextFullStandaloneLazyGetenvShrinkTest|ContextFullStandaloneLazyRandomBytesShrinkTest|ContextFullStandaloneLazyJsonOffsetShrinkTest|ContextFullStandaloneLazyExceptionErrorBridgeRuntimeShrinkTest|TypeDeadFormatAbiRuntimeShrinkTest|StringFormatRuntimeStandaloneTest' → OK (27 tests)
• ./script/aot-smoke.sh → 8/8
• AOT echo "hi" → hi
• AOT sprintf("%s","ok") → ok
• AOT number_format(1234.5,2) → 1,234.50
• AOT printf("%s\n","ok") → ok

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