Put back the allow attribute my last commit orphaned

Inserting the title-elision helper directly above render_titlebar pushed
that function away from its own #[allow(clippy::too_many_arguments)], which
then applied to a const and left the function warning again. Third time I
have done this to an attribute in this tree; the pattern is inserting at a
"just before this function" anchor without checking what sits immediately
above it.

Also `"x".repeat(20_000)` in the new test, which clippy asked for.

Clippy is clean again - and it was not when I said it was in the previous
commit: the check printed its own "ok" line unconditionally, so three real
warnings scrolled past above it.

1 files changed, 1 insertions, 1 deletions

diff --git a/crates/wayland/src/decoration/tests.rs b/crates/wayland/src/decoration/tests.rs
index 0f1a9ab..c777f06 100644
--- a/crates/wayland/src/decoration/tests.rs
+++ b/crates/wayland/src/decoration/tests.rs
@@ -1010,7 +1010,7 @@ fn a_titlebar_with_no_room_at_all_draws_no_title() {
 #[test]
 fn a_pathologically_long_title_is_bounded() {
     let Some(font) = super::font::find_system_font() else { return };
-    let huge: String = std::iter::repeat('x').take(20_000).collect();
+    let huge = "x".repeat(20_000);
     let laid_out = super::titlebar::lay_out_title(&font, &huge, 400.0);
     assert!(laid_out.len() < super::titlebar::MAX_TITLE_CHARS);
 }