[co19] Roll co19 to b1b6108e0ef7aeaf27cacb5ff236494507fc48ac

2025-04-25 [email protected] dart-lang/co19#3122. Expect an error in case of non-constant in a constant expression (dart-lang/co19#3159)
2025-04-24 [email protected] dart-lang/co19#3057. Add return statement in loops tests (dart-lang/co19#3158)
2025-04-24 [email protected] dart-lang/co19#3057. Update instance check tests and add negated instance check ones (dart-lang/co19#3131)
2025-04-23 [email protected] dart-lang/co19#3057. Add promotion tests for C-style for-loop (dart-lang/co19#3153)
2025-04-18 [email protected] Fixes dart-lang/co19#3122. Update constants evaluation according to the specification (dart-lang/co19#3150)

Cq-Include-Trybots: luci.dart.try:analyzer-linux-release-try
Change-Id: Ie89c9a3fbb920cb7e6488d652118ccc805b6f4ad
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/424760
Commit-Queue: Erik Ernst <[email protected]>
Reviewed-by: Alexander Thomas <[email protected]>
Reviewed-by: Erik Ernst <[email protected]>
Commit-Queue: Alexander Thomas <[email protected]>

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": "6ff5ec332b9c1b9bcbca9f47758ec11469f5b91f",
+  "co19_rev": "b1b6108e0ef7aeaf27cacb5ff236494507fc48ac",
 
   # The internal benchmarks to use. See go/dart-benchmarks-internal
   "benchmarks_internal_rev": "1fa5d33a45f7d4dd0093124706cdfa45d9270851",