## Description
<!-- Please insert your description here and especially provide info
about the "what" this PR is solving -->
### As-is
Depending on the size, the Controls Island area gets cut off, making the
buttons in the cropped area inaccessible.
### To-be
The Controls Island is managed via scrolling, allowing interaction with
buttons regardless of the size.
If the main controls also exceed the available space, the entire
Controls Island becomes scrollable. Horizontal scrolling is available
for narrow windows.
#### narrow & smaill
https://github.com/user-attachments/assets/1a44ff4f-8fe2-4a05-96a8-59ebf7dafcff
#### somewhat generous size
https://github.com/user-attachments/assets/c73dbee4-8c8f-4937-ae1a-eda00178274c
## Linked Issues
<!-- Optional, if you have any -->
close#2400
## Additional Context
<!-- e.g. is there anything you'd like reviewers to focus on? -->
Although the size is somewhat less than ideal, the issue has been
resolved, and this serves as a universal solution.
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Co-authored-by: leafyy <wuqizq@outlook.com>
Younsang Na