Fix regression in import fixups introduced by .packages support.

pkg/analysis_server/lib/src/services/correction/fix_internal.dart

Index: pkg/analysis_server/lib/src/services/correction/fix_internal.dart
diff --git a/pkg/analysis_server/lib/src/services/correction/fix_internal.dart b/pkg/analysis_server/lib/src/services/correction/fix_internal.dart
index 3c8f1a748ee7919649fe89e9d4a93e591ad06179..d1ec86effdc3a706d758a350632b987cd2e1381b 100644
--- a/pkg/analysis_server/lib/src/services/correction/fix_internal.dart
+++ b/pkg/analysis_server/lib/src/services/correction/fix_internal.dart
@@ -1438,7 +1438,7 @@ class FixProcessor {
         String libraryFile = librarySource.fullName;
         // may be "package:" URI
         {
-          String libraryPackageUri = findAbsoluteUri(context, libraryFile);
+          String libraryPackageUri = findNonFileUri(context, libraryFile);
           if (libraryPackageUri != null) {
             _addFix_importLibrary(
                 DartFixKind.IMPORT_LIBRARY_PROJECT, libraryPackageUri);
@@ -1630,7 +1630,7 @@ class FixProcessor {
         if (substringAfterLast(libFile, '/') == uriName) {
           String fixedUri;
           // may be "package:" URI
-          String libPackageUri = findAbsoluteUri(context, libFile);
+          String libPackageUri = findNonFileUri(context, libFile);
           if (libPackageUri != null) {
             fixedUri = libPackageUri;
           } else {