RFR: 8373599: Cleanup arguments.hpp includes [v2]

[Paul Hübner]

On Fri, 12 Dec 2025 16:06:52 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

> Let's see how many files end up with enable_valhalla() first, then decide, after @Arraying work on https://bugs.openjdk.org/browse/JDK-8371357.

As of right now 37 non-test files have `is_valhalla_enabled()` and 26 new `#include "runtime/arguments.hpp` if I scripted correctly. I don't anticipate those numbers changing much until integration.

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PR Comment: https://git.openjdk.org/jdk/pull/28791#issuecomment-3647230267