Use explicit extensions for imports within src (#58421)

src/server/scriptVersionCache.ts

@@ -8,9 +8,9 @@ import {
     TextChangeRange,
     TextSpan,
     unchangedTextChangeRange,
-} from "./_namespaces/ts";
-import { emptyArray } from "./_namespaces/ts.server";
-import * as protocol from "./protocol";
+} from "./_namespaces/ts.js";
+import { emptyArray } from "./_namespaces/ts.server.js";
+import * as protocol from "./protocol.js";
 
 const lineCollectionCapacity = 4;