[Bug]: `defaultHasAside` has different value in server and iframe which results 418 error

[JounQin]

Version

System:
    OS: macOS 15.3.2
    CPU: (10) arm64 Apple M1 Max
    Memory: 303.47 MB / 64.00 GB
    Shell: 5.9 - /bin/zsh
  Browsers:
    Chrome: 134.0.6998.166
    Safari: 18.3.1
  npmPackages:
    @rspress/core: 1.43.9 => 1.43.9

Details

rspress/packages/theme-default/src/logic/useUISwitch.ts

Lines 27 to 29 in 7ce65da

	// if in iframe, default value is false
	const defaultHasAside =
	typeof window === 'undefined' ? true : window.top === window.self;

https://react.dev/errors/418?invariant=418

Reproduce link

N/A

Reproduce Steps

build then use html asset in iframe

Workaround

Set themeConfig#outline specifically