feat: unnecessary_underscores

dart-lang/sdk#59638

Author: mockturtl

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 **Prerelease**
 
+- `unnecessary_underscores` [dart-lang/sdk#59638][]
 - `strict_top_level_inference` [dart-lang/sdk#59562][]
 - REMOVE: `package_api_docs` [dart-lang/sdk#59554][]
 - REMOVE: `unsafe_html` [dart-lang/sdk#57099][]
@@ -247,3 +248,4 @@ No changes.
 [dart-lang/sdk#57099]: https://github.com/dart-lang/sdk/issues/57099
 [dart-lang/sdk#59554]: https://github.com/dart-lang/sdk/issues/59554
 [dart-lang/sdk#59562]: https://github.com/dart-lang/sdk/issues/59562
+[dart-lang/sdk#59638]: https://github.com/dart-lang/sdk/issues/59638

lib/analysis_options.3.7.0.yaml

@@ -205,6 +205,7 @@ linter:
     - unnecessary_string_interpolations
     - unnecessary_this
     - unnecessary_to_list_in_spreads
+    - unnecessary_underscores
     - unreachable_from_main
     - unrelated_type_equality_checks
     - use_build_context_synchronously