Fixes lint warning about `match { ... }` where `matches!` would do

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crates/pyrefly_config/src/error_kind.rs

diff --git a/crates/pyrefly_config/src/error_kind.rs b/crates/pyrefly_config/src/error_kind.rs
index 2da8b20..aee0331 100644
--- a/crates/pyrefly_config/src/error_kind.rs
+++ b/crates/pyrefly_config/src/error_kind.rs
@@ -624,10 +624,7 @@
     /// this kind. Unused-ignore diagnostics are excluded because suppressing one
     /// would only leave behind another unused ignore.
     pub fn is_suppressable(self) -> bool {
-        match self {
-            ErrorKind::UnusedIgnore | ErrorKind::UnusedTypeIgnore => false,
-            _ => true,
-        }
+        !matches!(self, ErrorKind::UnusedIgnore | ErrorKind::UnusedTypeIgnore)
     }
 
     /// A soft error is a diagnostic that should not influence overload selection