Rollup of 10 pull requests

[GuillaumeGomez]

Successful merges:

• nontemporal_store: make sure that the intrinsic is truly just a hint #128149 (nontemporal_store: make sure that the intrinsic is truly just a hint)
• Unify run button display with "copy code" button and with mdbook buttons #128394 (Unify run button display with "copy code" button and with mdbook buttons)
• const vector passed through to codegen #128537 (const vector passed through to codegen)
• std: do not overwrite style in get_backtrace_style #128632 (std: do not overwrite style in get_backtrace_style)
• Slightly refactor Flags in bootstrap #128878 (Slightly refactor Flags in bootstrap)
• Get rid of some #[allow(rustc::untranslatable_diagnostic)] #128886 (Get rid of some #[allow(rustc::untranslatable_diagnostic)])
• Fix codegen-units tests that were disabled 8 years ago #128929 (Fix codegen-units tests that were disabled 8 years ago)
• Fix warnings in rmake tests on x86_64-unknown-linux-gnu #128937 (Fix warnings in rmake tests on x86_64-unknown-linux-gnu)
• Use assert_matches around the compiler more #128978 (Use assert_matches around the compiler more)
• Fix bug in Parser::look_ahead. #128994 (Fix bug in Parser::look_ahead.)

r? @ghost
@rustbot modify labels: rollup

Create a similar rollup