Migrate src/test/ui/run-pass/* back to src/test/run-pass/.

Fix #54047

src/test/run-pass/array-slice-vec/vec-macro-with-trailing-comma.rs

@@ -0,0 +1,18 @@
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// run-pass
+
+
+
+pub fn main() {
+    assert_eq!(vec![1], vec![1,]);
+    assert_eq!(vec![1, 2, 3], vec![1, 2, 3,]);
+}