Fixes searches for export * as 'identifier' (#39533)

* Fixes searches for export * as 'identifier'
Fixes #39006

* Fix the context span to export declaration (was incorrectly set to sourceFile in prev commit)

src/services/findAllReferences.ts

@@ -132,6 +132,7 @@ namespace ts.FindAllReferences {
                 return node.parent.parent;
 
             case SyntaxKind.ImportClause:
+            case SyntaxKind.NamespaceExport:
                 return node.parent;
 
             case SyntaxKind.BinaryExpression:

src/services/importTracker.ts

@@ -481,6 +481,9 @@ namespace ts.FindAllReferences {
                         return exportInfo(symbol, getExportKindForDeclaration(exportNode));
                     }
                 }
+                else if (isNamespaceExport(parent)) {
+                    return exportInfo(symbol, ExportKind.Named);
+                }
                 // If we are in `export = a;` or `export default a;`, `parent` is the export assignment.
                 else if (isExportAssignment(parent)) {
                     return getExportAssignmentExport(parent);