fix: clippy 1.96 lints — map_or, duplicate_mod, needless_borrows, slice_refs

crates/application/src/test_helpers.rs

@@ -59,6 +59,12 @@ pub struct TestContextBuilder {
     pub config: AppConfig,
 }
 
+impl Default for TestContextBuilder {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl TestContextBuilder {
     pub fn new() -> Self {
         Self {