fix(test): reload tests pin the English interface like every other harness (#2239)

unsaved_changes_are_kept_until_reload_is_chosen looked for the English notice while the app
followed the developer's system language (Auto), so it failed on a non-English Windows.

Co-authored-by: abc2cb <271337822+abc2cb@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>

crates/ui-egui/tests/reload.rs

@@ -80,6 +80,8 @@ fn harness(path: &str) -> Harness<'static, PdfCraftApp> {
         app.set_option("language", "en").unwrap();
         // The labels looked for are English, whatever the machine's language.
         app.set_option("language", "en").unwrap();
+        // The labels below are English whatever the developer's system language is.
+        app.set_option("language", "en").unwrap();
         app.run_inline = true;
         app.open_path(&path);
         app