fix #26782, add no-implicit-casts, no-implicit-dynamic options

pkg/analyzer_cli/lib/src/driver.dart

Index: pkg/analyzer_cli/lib/src/driver.dart
diff --git a/pkg/analyzer_cli/lib/src/driver.dart b/pkg/analyzer_cli/lib/src/driver.dart
index b78389390303923106f8b3b262076a09083b2500..46316b793d38f41e0931d9d96571f81848d374a4 100644
--- a/pkg/analyzer_cli/lib/src/driver.dart
+++ b/pkg/analyzer_cli/lib/src/driver.dart
@@ -648,6 +648,8 @@ class Driver implements CommandLineStarter {
     contextOptions.generateSdkErrors = options.showSdkWarnings;
     contextOptions.lint = options.lints;
     contextOptions.strongMode = options.strongMode;
+    contextOptions.implicitCasts = options.implicitCasts;
+    contextOptions.implicitDynamic = options.implicitDynamic;
     return contextOptions;
   }