[dartdevc] Fix DDK sourcemap tests to use the right version of the SDK

Change-Id: I1fbed66efd51f02f0faa3b489013a398f8edcd1f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/127260
Auto-Submit: Nicholas Shahan <[email protected]>
Reviewed-by: Sigmund Cherem <[email protected]>
Commit-Queue: Nicholas Shahan <[email protected]>

Author: nshahan

pkg/dev_compiler/test/sourcemap/sourcemaps_ddk_suite.dart

@@ -53,7 +53,7 @@ class DevCompilerRunner implements CompilerRunner {
     Uri outDir = outputFile.resolve(".");
     String outputFilename = outputFile.pathSegments.last;
 
-    File sdkJsFile = findInOutDir("gen/utils/dartdevc/js/es6/dart_sdk.js");
+    File sdkJsFile = findInOutDir("gen/utils/dartdevc/kernel/es6/dart_sdk.js");
     var jsSdkPath = sdkJsFile.uri;
 
     File ddcSdkSummary = findInOutDir("ddc_sdk.dill");