test: Add index to AllFS test name

Signed-off-by: Paulo Gomes <pjbgf@linux.com>

Author: pjbgf

test/basic_test.go

@@ -22,8 +22,8 @@ import (
 func eachBasicFS(t *testing.T, test func(t *testing.T, fs Basic)) {
 	t.Helper()
 
-	for _, fs := range allFS(t.TempDir) {
-		t.Run(fmt.Sprintf("%T", fs), func(t *testing.T) {
+	for i, fs := range allFS(t.TempDir) {
+		t.Run(fmt.Sprintf("%d-%T", i, fs), func(t *testing.T) {
 			test(t, fs)
 		})
 	}