Repair dart2js/string_interpolation_test

Change-Id: I52b61fa85df75f88bb033970ebb2feee2989fdad
Reviewed-on: https://dart-review.googlesource.com/69010
Reviewed-by: Stephen Adams <sra@google.com>
Commit-Queue: Stephen Adams <sra@google.com>

Author: rakudrama

tests/compiler/dart2js/codegen/string_interpolation_test.dart

@@ -14,7 +14,8 @@ main() {
 
     String code2 =
         await compileAll(r'''main() { return "foo ${new Object()}"; }''');
-    Expect.isFalse(code2.contains(r'$add'));
+    Expect.isFalse(code2.contains(r'$add("foo ",'));
+    Expect.isTrue(code2.contains(r'"foo " + '));
   }
 
   asyncTest(() async {

tests/compiler/dart2js/dart2js.status

@@ -14,7 +14,6 @@ codegen/logical_expression_test: Fail # Issue 17027
 codegen/side_effect_tdiv_regression_test: Fail # Issue 33050
 codegen/simple_function_subtype_test: Fail # simple_function_subtype_test is temporarily(?) disabled due to new method for building function type tests.
 codegen/string_escapes_test: Fail # Issue 33060
-codegen/string_interpolation_test: RuntimeError # Issue 34095
 deferred_loading/deferred_loading_test: Slow, Pass
 equivalence/id_equivalence1_test: Pass, Slow
 equivalence/id_equivalence2_test: Pass, Slow