Optimize nonstandard_macro_braces by 99.9683% [1.1b -> 351K]

[blyxyas]

I know that we shouldn't move lints to pre-expansion, but nonstandard_macro_braces was taking up almost a 25% of the Clippy-exclusive runtime in wasmi-0.35.0, and moving it to pre-expansion lets us not bother as much with expansion data.

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Previously, we had to get expansion data via outer_expn_data, which does atomic operations, SessionGlobals operations (so, locking threads), and was generally a very bumpy way of doing things. For example in wasmi we were calling scoped_tls::ScopedKey<rustc_span::SessionGlobals>::with<<rustc_span::hygiene::HygieneData>::with<rustc_span::hygiene::ExpnData, <rustc_span::hygiene::SyntaxContext>::outer_expn_data::{closure#0}>::{closure#0}, rustc_span::hygiene::ExpnData> 5,879,804 times. Thus locking the thread 11,759,608 times.

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So personally I think that moving this lint to pre-expansion is worth.

changelog:[nonstandard_macro_braces]: Optimize by 99.97%

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[github-actions]

Lintcheck changes for efddb12

Lint	Added	Removed	Changed
clippy::nonstandard_macro_braces	0	2	1

This comment will be updated if you push new changes

[blyxyas]

I didn't notice those lintcheck differences, I'll fix them

[nik-rev]

1.95 will stabilize 3 macros, those should also be added here

• assert_matches!: (
• debug_assert_matches!: (
• cfg_select: {