fix: assure archives are unique if their generator-scripts are called with arguments. (#1440)

Previously there was a race condition that would cause archives to be created either with
or without arguments, depending on which test was run first.

After its creation, they wouldn't be looked at again as on disk they would already be available
in their usable form.

Author: Byron

gix-diff/tests/fixtures/generated-archives/make_diff_repo.tar

@@ -414,11 +414,17 @@ fn scripted_fixture_read_only_with_args_inner(
 
     let script_basename = script_location.file_stem().unwrap_or(script_location.as_os_str());
     let archive_file_path = fixture_path_inner(
-        Path::new("generated-archives").join(format!(
-            "{}.tar{}",
-            script_basename.to_str().expect("valid UTF-8"),
-            if cfg!(feature = "xz") { ".xz" } else { "" }
-        )),
+        {
+            let mut suffix = args.join("_");
+            if !suffix.is_empty() {
+                suffix.insert(0, '_');
+            }
+            Path::new("generated-archives").join(format!(
+                "{}{suffix}.tar{}",
+                script_basename.to_str().expect("valid UTF-8"),
+                if cfg!(feature = "xz") { ".xz" } else { "" }
+            ))
+        },
         root,
     );
     let (force_run, script_result_directory) = destination_dir.map_or_else(