The language dropdown menu doesn't open as expected

### Describe the bug - The language dropdown menu cannot be opened after the first click. - After the first click collapses the dropdown menu, moving the mouse out and then back into the trigger area causes the dropdown to flash and disappear. <video src="https://github.com/user-attachments/assets/8f3f6ae6-c86a-4e85-8c56-39ccfca2d445"><video> ### Reproduction https://ast-explorer.dev/ ### System Info ```Shell System: OS: macOS 15.7.2 CPU: (12) arm64 Apple M4 Pro Memory: 182.55 MB / 48.00 GB Browsers: Chrome: 143.0.7499.193 Safari: 26.1 ``` ### Used Package Manager npm ### Validations - [x] Follow our [Code of Conduct](https://github.com/sxzz/.github/blob/main/CODE_OF_CONDUCT.md) - [x] Read the [Contributing Guide](https://github.com/sxzz/contribute). - [x] Check that there isn't already an issue that reports the same bug to avoid creating a duplicate. - [x] Check that this is a concrete bug. For Q&A, please open a GitHub Discussion instead. - [x] The provided reproduction is a [minimal reproducible](https://stackoverflow.com/help/minimal-reproducible-example) of the bug. ### Contributions - [x] I am willing to submit a PR to fix this issue - [ ] I am willing to submit a PR with failing tests (actually just go ahead and do it, thanks!)