Return #t instead of (void) for no-suggestion rules

When a rule uses #:no-suggestion, the transformer now returns (present #t)
instead of (present #'(void)) for pattern matches.

Co-authored-by: jackfirth <[email protected]>

Author: Copilot

base.rkt

@@ -173,7 +173,7 @@
          [pattern
            (~? (~@ #:do [partial-match-log-statement]))
            (~@ . wrapped-pattern-directive) ... 
-           (~? (present #'replacement) (present #'(void)))]
+           (~? (present #'replacement) (present #t))]
          [_ absent])))))