fix(waiter): Add empty pattern check to wait_for_all_content

Author: tony

src/libtmux/test/waiter.py

@@ -973,6 +973,10 @@ def has_at_least_5_lines(content):
             ContentMatchType.PREDICATE
         )
     """
+    if not content_patterns:
+        msg = "At least one content pattern must be provided"
+        raise ValueError(msg)
+
     # Convert single match_type to list of same type
     if not isinstance(match_types, list):
         match_types = [match_types] * len(content_patterns)