bot-url: Add event filtering UI to generate bot URL modal.

Adds an option to the generate bot URL modal to filter for events
that will trigger notifications. This option is conditionally
displayed when only `all_event_types` is defined for the selected
integration.

If selected, the URL will display all events by default. There
are "check all" and "uncheck all" buttons to easily include or
remove all the events from the URL.

Fixes #27628.

web/styles/modal.css

@@ -482,3 +482,23 @@
         border: 1px solid var(--color-hotkey-hint);
     }
 }
+
+#generate-integration-url-modal {
+    #integrations-event-container {
+        .integration-all-events-buttons {
+            display: flex;
+            gap: 10px;
+            margin: 5px 0 10px;
+        }
+
+        #integrations-event-options {
+            .integration-event-wrapper {
+                margin: 5px 0;
+            }
+
+            .integration-event-name {
+                word-break: break-all;
+            }
+        }
+    }
+}