Fix Bug#37202

* test/lisp/shadowfile-tests.el (shadow-test08-shadow-todo)
(shadow-test09-shadow-copy-files): Use truename of
`shadow-test-remote-temporary-file-directory'.  (Bug#37202)

test/lisp/shadowfile-tests.el

@@ -718,6 +718,8 @@ guaranteed by the originator of a cluster definition."
         (shadow-info-file shadow-test-info-file)
 	(shadow-todo-file shadow-test-todo-file)
         (shadow-inhibit-message t)
+        (shadow-test-remote-temporary-file-directory
+         (file-truename shadow-test-remote-temporary-file-directory))
 	shadow-clusters shadow-literal-groups shadow-regexp-groups
         shadow-files-to-copy
 	cluster1 cluster2 primary regexp file)
@@ -856,6 +858,8 @@ guaranteed by the originator of a cluster definition."
         (shadow-info-file shadow-test-info-file)
 	(shadow-todo-file shadow-test-todo-file)
         (shadow-inhibit-message t)
+        (shadow-test-remote-temporary-file-directory
+         (file-truename shadow-test-remote-temporary-file-directory))
         (shadow-noquery t)
         shadow-clusters shadow-files-to-copy
 	cluster1 cluster2 primary regexp file mocked-input)