Fix toast pointer-events, add show-all-series button, fix UI tests

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

src/server/web/static/js/app.js

@@ -529,9 +529,15 @@ class AniWorldApp {
             this.toggleMissingOnlyFilter();
         });
 
-        document.getElementById('sort-alphabetical').addEventListener('click', () => {
-            this.toggleAlphabeticalSort();
-        });
+                document.getElementById('show-all-series').addEventListener('click', () => {
+                    if (this.showMissingOnly) {
+                        this.toggleMissingOnlyFilter();
+                    }
+                });
+
+                document.getElementById('sort-alphabetical').addEventListener('click', () => {
+                    this.toggleAlphabeticalSort();
+                });
     }
 
     initTheme() {