fix: phrase filter

crates/core/src/database/posts.rs

@@ -481,6 +481,10 @@ impl DataManager {
 
         for mut post in posts.clone() {
             for phrase in muted {
+                if phrase.is_empty() {
+                    continue;
+                }
+
                 if post.content.contains(phrase) {
                     post.context.content_warning = "Contains muted phrase".to_string();
                     break;