The front end is not happy about wrong extension type constructor declaration

[eernstg]

Note that this failure is similar to the one which is reported in #55648, but the stack dump is quite different.

Consider the following program:

class _A<X> { const _A(); }

extension type const A<X>._(_A<X> _) implements _A<X> {
  const A<X>(): this._(_A<X>());
}

void main() {}

This program is rejected (rightfully) by the analyzer, but it causes the common front end to incur a dynamic type error.

Stack dump

Invalid argument(s): Iterables do not have same length.
#0      MapBase._fillMapWithIterables (dart:collection/maps.dart:178:7)
#1      new LinkedHashMap.fromIterables (dart:collection/linked_hash_map.dart:246:13)
#2      Substitution.fromPairs (package:kernel/type_algebra.dart:477:13)
#3      ExtensionType._computeTypeErasure (package:kernel/ast.dart:12099:36)
#4      ExtensionType.extensionTypeErasure (package:kernel/ast.dart:12043:40)
#5      BinaryPrinter.visitExtensionType (package:kernel/binary/ast_to_binary.dart:2493:20)
#6      ExtensionType.accept (package:kernel/ast.dart:12123:14)
#7      BinaryPrinter.writeNode (package:kernel/binary/ast_to_binary.dart:441:10)
#8      BinaryPrinter.visitFunctionNode (package:kernel/binary/ast_to_binary.dart:1528:5)
#9      FunctionNode.accept (package:kernel/ast.dart:3904:38)
#10     BinaryPrinter.writeFunctionNode (package:kernel/binary/ast_to_binary.dart:448:10)
#11     BinaryPrinter.visitProcedure (package:kernel/binary/ast_to_binary.dart:1379:5)
#12     Procedure.accept (package:kernel/ast.dart:3261:40)
#13     BinaryPrinter.writeProcedureNode (package:kernel/binary/ast_to_binary.dart:469:10)
#14     BinaryPrinter.writeProcedureNodeList (package:kernel/binary/ast_to_binary.dart:360:7)
#15     BinaryPrinter.visitLibrary (package:kernel/binary/ast_to_binary.dart:1124:5)
#16     Library.accept (package:kernel/ast.dart:597:38)
#17     BinaryPrinter.writeLibraryNode (package:kernel/binary/ast_to_binary.dart:462:10)
#18     BinaryPrinter.writeLibraries (package:kernel/binary/ast_to_binary.dart:797:9)
#19     BinaryPrinter.writeComponentFile.<anonymous closure> (package:kernel/binary/ast_to_binary.dart:607:7)
#20     Timeline.timeSync (dart:developer/timeline.dart:173:22)
#21     BinaryPrinter.writeComponentFile (package:kernel/binary/ast_to_binary.dart:588:14)
#22     serializeComponent (file:///b/f/w/pkg/vm/bin/kernel_service.dart:1031:11)
#23     _processLoadRequest (file:///b/f/w/pkg/vm/bin/kernel_service.dart:931:13)
<asynchronous suspension>