css: add log filter to CSSStyleSheet test

src/browser/webapi/Element.zig

@@ -1081,6 +1081,7 @@ pub fn checkVisibility(self: *Element, page: *Page) bool {
 
         current = el.parentElement();
     }
+
     return true;
 }
 

src/browser/webapi/css/CSSStyleSheet.zig

@@ -124,5 +124,7 @@ pub const JsApi = struct {
 
 const testing = @import("../../../testing.zig");
 test "WebApi: CSSStyleSheet" {
+    const filter: testing.LogFilter = .init(.js);
+    defer filter.deinit();
     try testing.htmlRunner("css/stylesheet.html", .{});
 }