fix: cargo fmt and suppress dead_code warnings for unused paste-burst methods

crates/tui/src/tui/paste.rs

@@ -344,4 +344,4 @@ mod tests {
         // contract here).
         assert!(app.input.is_empty());
     }
-}
+}

crates/tui/src/tui/paste_burst.rs

@@ -77,6 +77,7 @@ impl PasteBurst {
         CharDecision::RetainFirstChar
     }
 
+    #[allow(dead_code)]
     pub fn on_plain_char_no_hold(&mut self, now: Instant) -> Option<CharDecision> {
         self.note_plain_char(now);
 
@@ -176,6 +177,7 @@ impl PasteBurst {
         self.burst_window_until = Some(now + PASTE_ENTER_SUPPRESS_WINDOW);
     }
 
+    #[allow(dead_code)]
     pub fn try_append_char_if_active(&mut self, ch: char, now: Instant) -> bool {
         if self.active || !self.buffer.is_empty() {
             self.append_char_to_buffer(ch, now);