co19/LanguageFeatures/Extension-types/exhaustiveness_enum_A02_t01 for analyzer

[scheglov]

co19/LanguageFeatures/Extension-types/exhaustiveness_enum_A02_t01
co19/LanguageFeatures/Extension-types/exhaustiveness_enum_A02_t02

https://dart-review.googlesource.com/c/sdk/+/342729 fixes the analyzer implementation, so that it reports errors at the same location as CFE. So, the tests need updates.

FAILED: dart2analyzer-none release_arm64 co19/LanguageFeatures/Extension-types/exhaustiveness_enum_A02_t02
Expected: Pass
Actual: MissingCompileTimeError

--- Command "dart2analyzer" (took 17ms):
DART_CONFIGURATION=ReleaseARM64 sdk/bin/dart --packages=.dart_tool/package_config.json pkg/analyzer_cli/bin/analyzer.dart --use-analysis-driver-memory-byte-store --dart-sdk=/Users/scheglov/Source/Dart/sdk.git/sdk/sdk -Dtest_runner.configuration=custom-configuration-1 --enable-experiment=inline-class --ignore-unrecognized-flags --packages=/Users/scheglov/Source/Dart/sdk.git/sdk/.dart_tool/package_config.json --format=json /Users/scheglov/Source/Dart/sdk.git/sdk/tests/co19/src/LanguageFeatures/Extension-types/exhaustiveness_enum_A02_t02.dart

static error failures:
- Missing expected unspecified error at line 22, column 8, length 14.

- Missing expected unspecified error at line 35, column 8, length 14.

- Unexpected error at line 25, column 3, length 6: COMPILE_TIME_ERROR.NON_EXHAUSTIVE_SWITCH_STATEMENT

- Unexpected error at line 38, column 3, length 6: COMPILE_TIME_ERROR.NON_EXHAUSTIVE_SWITCH_STATEMENT

--- Re-run this test:
python3 tools/test.py -m release -c dart2analyzer -a arm64 co19/LanguageFeatures/Extension-types/exhaustiveness_enum_A02_t02