Reify type params on map literals

test/codegen_expected/language/identical_const_test_08_multi.js

 dart_library.library('language/identical_const_test_08_multi', null, /* Imports */[
   'dart_sdk',
   'expect'
 ], function load__identical_const_test_08_multi(exports, dart_sdk, expect) {
   'use strict';
   const core = dart_sdk.core;
   const dart = dart_sdk.dart;
   const dartx = dart_sdk.dartx;
   const expect$ = expect.expect;
   const identical_const_test_08_multi = Object.create(null);
   let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
   let dynamicTodynamic = () => (dynamicTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [dart.dynamic])))();
   identical_const_test_08_multi.f = function() {
   };
   dart.fn(identical_const_test_08_multi.f, VoidTodynamic());
   identical_const_test_08_multi.g = 1;
   identical_const_test_08_multi.identical_ff = core.identical(identical_const_test_08_multi.f, identical_const_test_08_multi.f);
   identical_const_test_08_multi.identical_fg = core.identical(identical_const_test_08_multi.f, identical_const_test_08_multi.g);
   identical_const_test_08_multi.identical_gf = core.identical(identical_const_test_08_multi.g, identical_const_test_08_multi.f);
   identical_const_test_08_multi.identical_gg = core.identical(identical_const_test_08_multi.g, identical_const_test_08_multi.g);
-  identical_const_test_08_multi.a = dart.const(dart.map([true, 0]));
-  identical_const_test_08_multi.b = dart.const(dart.map([false, 0]));
+  identical_const_test_08_multi.a = dart.const(dart.map([true, 0], core.bool, core.int));
+  identical_const_test_08_multi.b = dart.const(dart.map([false, 0], core.bool, core.int));
   identical_const_test_08_multi.use = function(x) {
     return x;
   };
   dart.fn(identical_const_test_08_multi.use, dynamicTodynamic());
   identical_const_test_08_multi.main = function() {
     identical_const_test_08_multi.use(identical_const_test_08_multi.a);
     identical_const_test_08_multi.use(identical_const_test_08_multi.b);
     expect$.Expect.isFalse(identical_const_test_08_multi.identical_gf);
   };
   dart.fn(identical_const_test_08_multi.main, VoidTodynamic());
   // Exports:
   exports.identical_const_test_08_multi = identical_const_test_08_multi;
 });