[co19] Roll co19 to 9b61c757d1373ef3ccf7db776c8520314fc843b9

2025-11-21 sgrekhov22@gmail.com dart-lang/co19#3315. Add tests for the body of the primary constructor (dart-lang/co19#3411)
2025-11-21 sgrekhov22@gmail.com Fixes dart-lang/co19#3409. Add missing expected warnings (dart-lang/co19#3410)
2025-11-20 sgrekhov22@gmail.com dart-lang/co19#3315. Update tests for formal parameters. Part 4. (dart-lang/co19#3407)
2025-11-20 sgrekhov22@gmail.com dart-lang/co19#3315. Update tests for formal parameters. Part 5. (dart-lang/co19#3408)
2025-11-20 sgrekhov22@gmail.com dart-lang/co19#3315. Update tests for formal parameters. Part 2. (dart-lang/co19#3405)
2025-11-20 sgrekhov22@gmail.com dart-lang/co19#3315. Update tests for formal parameters. Part 3. (dart-lang/co19#3406)
2025-11-19 sgrekhov22@gmail.com dart-lang/co19#3315. Move primary constructors files to `Primary-constructors` (dart-lang/co19#3404)
2025-11-19 sgrekhov22@gmail.com dart-lang/co19#3315. Move tests for formal parameters to `primary-constructors` (dart-lang/co19#3403)
2025-11-19 sgrekhov22@gmail.com dart-lang/co19#3315. Rename experimental flag to `primary-constructors` (dart-lang/co19#3402)
2025-11-19 sgrekhov22@gmail.com dart-lang/co19#3315. Update VM tests for primary constructors (dart-lang/co19#3401)
2025-11-18 sgrekhov22@gmail.com dart-lang/co19#3315. Move/add mixins and generative constructors tests to `Primary-constructors`. (dart-lang/co19#3394)
2025-11-18 sgrekhov22@gmail.com dart-lang/co19#3315. Move name conflicts tests for constructors to `Primary-constructors` (dart-lang/co19#3397)
2025-11-18 sgrekhov22@gmail.com dart-lang/co19#2694. Replace `unspecified` by real lint name (dart-lang/co19#3400)
2025-11-18 sgrekhov22@gmail.com dart-lang/co19#2559. Update `augmenting_constructors_A01_*` tests (dart-lang/co19#3388)
2025-11-17 sgrekhov22@gmail.com dart-lang/co19#3315. Move parameters scope tests to `Primary-constructors` (dart-lang/co19#3398)
2025-11-17 sgrekhov22@gmail.com dart-lang/co19#2694. Remove obsolete `null-aware-elements` experimental flag (dart-lang/co19#3399)
2025-11-14 sgrekhov22@gmail.com dart-lang/co19#3315. Update and move extension types tests to `Primary-constructors` (dart-lang/co19#3396)
2025-11-14 sgrekhov22@gmail.com dart-lang/co19#3315. Add test checking the special rule for factory constructors (dart-lang/co19#3395)
2025-11-14 sgrekhov22@gmail.com dart-lang/co19#3315. Add tests for `new()` and `factory()` constructors (dart-lang/co19#3392)

R=athom@google.com, eernst@google.com

Cq-Include-Trybots: luci.dart.try:analyzer-linux-release-try,dart2js-minified-linux-d8-try
Change-Id: I5b716643d82114746b70f1553383280eb30b4327
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/463582
Auto-Submit: Sergey Grekhov <sgrekhov22@gmail.com>
Commit-Queue: Alexander Thomas <athom@google.com>
Reviewed-by: Erik Ernst <eernst@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>

Author: sgrekhov

DEPS

@@ -54,7 +54,7 @@ vars = {
 
   # co19 is a cipd package automatically generated for each co19 commit.
   # Use tests/co19/update.sh to update this hash.
-  "co19_rev": "9db3c2b39b7aa018277f61e35d74624a4f55e30b",
+  "co19_rev": "9b61c757d1373ef3ccf7db776c8520314fc843b9",
 
   # The internal benchmarks to use. See go/dart-benchmarks-internal
   "benchmarks_internal_rev": "6058722b4643b62c757dadc006f00bc3e14c4380",