Rollup merge of rust-lang#79105 - petrochenkov:winlink, r=shepmaster

std: Fix test `symlink_hard_link` on Windows

The test was introduced in rust-lang#78026 and fails depending on Windows version and admin rights.
Other similar tests check for symlink creation permissions before doing anything, this PR performs the same check for `symlink_hard_link` as well.

library/std/src/fs/tests.rs

@@ -1341,6 +1341,9 @@ fn metadata_access_times() {
 #[test]
 fn symlink_hard_link() {
     let tmpdir = tmpdir();
+    if !got_symlink_permission(&tmpdir) {
+        return;
+    };
 
     // Create "file", a file.
     check!(fs::File::create(tmpdir.join("file")));