Disable preview mode during benchmarks

Temporarily. Looks to be causing benchmark regressions and should be considered separately.

crates/ruff_benchmark/benches/linter.rs

@@ -1,4 +1,5 @@
 use ruff::linter::lint_only;
+use ruff::settings::types::PreviewMode;
 use ruff::settings::{flags, Settings};
 use ruff::source_kind::SourceKind;
 use ruff::RuleSelector;
@@ -79,7 +80,7 @@ fn benchmark_default_rules(criterion: &mut Criterion) {
 
 fn benchmark_all_rules(criterion: &mut Criterion) {
     let settings = Settings {
-        rules: RuleSelector::All.all_rules().collect(),
+        rules: RuleSelector::All.rules(PreviewMode::Disabled).collect(),
         ..Settings::default()
     };