Include the target symbol in search if location is propertyName or the import or export specifier dont specify "as" clause

Handles #7708

tests/cases/fourslash/renameImportAndExportInDiffFiles.ts

@@ -0,0 +1,18 @@
+/// <reference path='fourslash.ts' />
+
+// @Filename: a.ts
+////export var /*1*/a;
+
+// @Filename: b.ts
+////import { /*2*/a } from './a';
+////export { /*3*/a };
+
+goTo.file("a.ts");
+goTo.marker("1");
+
+goTo.file("b.ts");
+goTo.marker("2");
+verify.referencesCountIs(3);
+
+goTo.marker("3");
+verify.referencesCountIs(3);