Fix fd offset handling in ReadStream (#10883)

Co-authored-by: Georgijs Vilums <=>
Co-authored-by: gvilums <gvilums@users.noreply.github.com>
Co-authored-by: Jarred Sumner <jarred@jarredsumner.com>

test/js/node/fs/fs.test.ts

@@ -1815,6 +1815,24 @@ describe("createReadStream", () => {
       done();
     });
   });
+
+  it(
+    "correctly handles file descriptors with an offset",
+    done => {
+      const path = `${tmpdir()}/bun-fs-createReadStream-${Date.now()}.txt`;
+      const fd = fs.openSync(path, "w+");
+
+      const stream = fs.createReadStream("", { fd: fd, start: 2 });
+      stream.on("data", chunk => {
+        expect(chunk.toString()).toBe("llo, world!");
+        done();
+      });
+      stream.on("error", done);
+
+      fs.writeSync(fd, "Hello, world!");
+    },
+    { timeout: 100 },
+  );
 });
 
 describe("fs.WriteStream", () => {