New `dynamic_modules_suite/multiple_classes` test fails with CompileTimeError

[mkustermann]

The tests

dynamic_modules_suite/multiple_classes CompileTimeError (expected Pass)

are failing on configurations

vm-aot-dyn-linux-debug-x64

Error on compile bytecode multiple_classes/modules/entry2.dart: /b/s/w/ir/cache/builder/sdk/out/DebugX64/dartaotruntime --disable-dart-dev /b/s/w/ir/cache/builder/sdk/out/DebugX64/gen/dart2bytecode.dart.snapshot --platform /b/s/w/ir/cache/builder/sdk/out/DebugX64/vm_platform_strong.dill --target vm --packages /b/s/w/ir/cache/builder/sdk//.dart_tool/package_config.json -Ddart.vm.profile=false -Ddart.vm.product=true --import-dill main.dart_no_aot.dill --validate dev-dart-app:/data/multiple_classes/dynamic_interface.yaml --verbosity=all --filesystem-root /b/s/w/ir/cache/builder/sdk/pkg/dynamic_modules/test/ --filesystem-scheme dev-dart-app --output modules/entry2.dart.bytecode dev-dart-app:/data/multiple_classes/modules/entry2.dart from /b/s/w/ir/x/t/_dynamic_module-FPFOMJ/multiple_classes

stdout:
dev-dart-app:/data/multiple_classes/modules/entry2.dart:8:4: Error: Cannot invoke member 'override' from a dynamic module.
Try removing the call or update the dynamic interface to list member 'override' as callable.
  @override
   ^
dev-dart-app:/data/multiple_classes/modules/entry2.dart:9:19: Error: Cannot use class 'String' in a dynamic module.
Try removing the reference to class 'String' or update the dynamic interface to list class 'String' as callable.
  String getString() => 'C';
                  ^
stderr:

#0      runProcess (file:///b/s/w/ir/cache/builder/sdk/pkg/dynamic_modules/test/runner/util.dart:151:5)
<asynchronous suspension>
#1      AotExecutor.compileDynamicModule (file:///b/s/w/ir/cache/builder/sdk/pkg/dynamic_modules/test/runner/aot.dart:140:5)
<asynchronous suspension>
#2      _runSingleTest (file:///b/s/w/ir/cache/builder/sdk/pkg/dynamic_modules/test/runner/main.dart:86:7)
<asynchronous suspension>
#3      main (file:///b/s/w/ir/cache/builder/sdk/pkg/dynamic_modules/test/runner/main.dart:64:19)
<asynchronous suspension>

/cc @natebiggs

[dart-github-bot]

Summary: The dynamic_modules_suite/multiple_classes test fails on Linux x64 with a CompileTimeError due to incompatible use of @override and String within a dynamic module. The dynamic interface needs updating.