Roll the latest dart_style into the SDK.

This only has one change, a bug fix:

dart-lang/dart_style#1766

Prior to this change, if you have a file with an "@Dart=" language
version comment, that version number won't be used to decide whether to
apply the 3.7 or 3.8 style changes. (It *does* correctly decide whether
to apply the 3.7 or older short style.) This fixes that.

It shouldn't have any noticeable effect in the SDK. The only mentions of
"@Dart=3.7", "@Dart=3.8", or "@Dart=3.9" I see are in the formatter's
own tests.

Change-Id: I48e55637c7373e09bcf40befc174bebacecf8e9a
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/447762
Reviewed-by: Ivan Inozemtsev <[email protected]>
Auto-Submit: Bob Nystrom <[email protected]>
Commit-Queue: Bob Nystrom <[email protected]>
Commit-Queue: Ivan Inozemtsev <[email protected]>

Author: munificent

DEPS

@@ -126,7 +126,7 @@ vars = {
   #   and land the review.
   #
   # For more details, see https://github.com/dart-lang/sdk/issues/30164.
-  "dart_style_rev": "3499c1ee7a9bc30f3d5b94af932e8f6ac2cffa14", # rolled manually
+  "dart_style_rev": "ca019b0498692ad78f5f0f0f6208a1258e17fc90", # rolled manually
 
   ### /third_party/pkg dependencies
   # 'tools/rev_sdk_deps.dart' will rev pkg dependencies to their latest; put an