Make scripting debug test skippable (valkey-io#3368)

I'm developing a module to provide luajit as lua execution engine.
See valkey-io#1229 for details.

Unfortunately said module doesn't support debugging yet. So in order to
test it with valkey tests scripting debug tests need to be skipped. This
patch makes an anonymous test skippable by name.

Signed-off-by: secwall <secwall@yandex-team.ru>

Author: secwall

tests/unit/scripting.tcl

@@ -1658,9 +1658,11 @@ start_server {tags {"scripting repl external:skip"}} {
 
 if {$is_eval eq 1 && $script_compatibility_api == "redis"} {
 start_server {tags {"scripting external:skip"}} {
-    r script debug sync
-    r eval {return 'hello'} 0
-    r eval {return 'hello'} 0
+    test {Test scripting debug smoke} {
+        r script debug sync
+        r eval {return 'hello'} 0
+        r eval {return 'hello'} 0
+    }
 }
 
 start_server {tags {"scripting needs:debug external:skip"}} {