Disable stdout buffering in CLI tests

Author: ciciplusplus

tests/TestApp_source/cli_tests.m

@@ -3136,6 +3136,8 @@ int test_CFURLHasDirectoryPath() {
 // clang-format on
 
 int TestApp_cli_tests_main(void) {
+  setbuf(stdout, NULL);
+
   int tests_run = 0;
   int tests_passed = 0;