QA: ignore Core/Base IR-introspection internals in public-API check

[ChrisRackauckas-Claude]

Please ignore until reviewed by @ChrisRackauckas.

Problem

The QA julia 1 (1.11+) lane fails on the ExplicitImports all_qualified_accesses_are_public check. hasbranching is a compiler-introspection utility that code_typeds f and scans the resulting typed IR, so it necessarily reaches into Core/Base IR and inference internals that have no public equivalent. The ignore tuple only listed :Typeof, so the other eight internals were flagged:

- `Argument` is not public in `Core` ... src/FunctionProperties.jl:123
- `CodeInfo` is not public in `Core` ... src/FunctionProperties.jl:98
- `Const` is not public in `Core` ... src/FunctionProperties.jl:130
- `MethodInstance` is not public in `Core` ... src/FunctionProperties.jl:140
- `PartialStruct` is not public in `Core` ... src/FunctionProperties.jl:254
- `SSAValue` is not public in `Core` ... src/FunctionProperties.jl:120
- `SlotNumber` is not public in `Core` ... src/FunctionProperties.jl:125
- `code_typed_by_type` is not public in `Base` ... src/FunctionProperties.jl:89

Fix

Extend the all_qualified_accesses_are_public ignore tuple in test/qa/qa.jl from (:Typeof,) to also cover :Argument, :CodeInfo, :Const, :MethodInstance, :PartialStruct, :SSAValue, :SlotNumber, :code_typed_by_type. These are all Core/Base compiler-introspection internals (typed-IR node types, inference lattice element types, the resolved-call type, and the non-public typed-IR entry point) with no public API — the same rationale that already applies to Typeof/GotoIfNot. all_explicit_imports_are_public = (; ignore = (:GotoIfNot,)) is left unchanged. No source change, no compat/floor change.

Validation (local)

• QA group (GROUP=QA Pkg.test) on Julia 1.12.6 (the julia 1 lane): QA/qa.jl | 18 18 — all pass (was 17 pass / 1 error before).
• QA group on Julia 1.10.11 (lts lane): QA/qa.jl | 16 16 — all pass (the two public-API checks are skipped pre-1.11).
• Reproduced the pre-fix failure (exactly the 8 names above) before editing; confirmed all clear afterward.
• Ran Runic on the changed file.

Resolved deps at verification: SciMLTesting 1.8.0, ExplicitImports 1.15.0, Aqua 0.8.16, JET 0.11.5.

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