fix: add newly introduced parameter for App.start function to all corresponding usages

examples/elements/selection.zig

@@ -52,7 +52,7 @@ pub fn main() !void {
     defer container.deinit();
     try container.append(try .init(allocator, .{}, selection.element()));
 
-    try app.start();
+    try app.start(.full);
     defer app.stop() catch |err| log.err("Failed to stop application: {any}", .{err});
 
     // event loop