add: check ip ban endpoint

crates/core/src/database/questions.rs

@@ -408,6 +408,10 @@ impl DataManager {
 
             // check muted phrases
             for phrase in receiver.settings.muted {
+                if phrase.is_empty() {
+                    continue;
+                }
+
                 if data.content.contains(&phrase) {
                     // act like the question was created so theyre less likely to try and send it again or bypass
                     return Ok(0);