Add an assertion for ResolveExport

Author: kimjg1119

spec.html

@@ -28211,6 +28211,7 @@ <h1>
             1. For each ExportEntry Record _e_ of _module_.[[IndirectExportEntries]], do
               1. If _e_.[[ExportName]] is _exportName_, then
                 1. Assert: _e_.[[ModuleRequest]] is not *null*.
+                1. Assert: _e_.[[ImportName]] is not either ~all-but-default~ or *null*.
                 1. Let _importedModule_ be GetImportedModule(_module_, _e_.[[ModuleRequest]]).
                 1. If _e_.[[ImportName]] is ~all~, then
                   1. Assert: _module_ does not provide the direct binding for this export.