Clear the superfluous scrollbars at the DebugConfigurationWidget and DebugToolBar

[xieyuanhuata]

What it does

fix #5819 - Clear the superfluous scrollbars for debug widgets

before:

after:

How to test

Open debug
Moves the mouse to the right of the DebugConfigurationWidget or DebugToolBar border

Review checklist

• as an author, I have thoroughly tested my changes and carefully followed the review guidelines

Reminder for reviewers

• as a reviewer, I agree to behave in accordance with the review guidelines

[xieyuanhuata]

@AlexTugarev please try whether it behaves as you expect

[vince-fugnitto]

It works really well, I no longer see the superfluous scrollbar from the debug configuration and toolbar widgets. Nice work 👍

[AlexTugarev]

thanks @xieyuanhuata for fixing this issue!

I'm generally fine with disabling perfect scroll bar as as, but why should it be created in the first place?
I think unsetting it in ctor like this would also to the job. @akosyakov is there a use for the scrollbar at all in those two widgets?

    constructor() {
        super();
        this.scrollOptions = undefined;
    }

[xieyuanhuata]

@AlexTugarev I agree with your opinion

[akosyakov]

no, unsetting like @AlexTugarev suggested should work as well

[xieyuanhuata]

@AlexTugarev @akosyakov
you are right! Unsetting like @AlexTugarev suggested work as well.

[akosyakov]

@vince-fugnitto @AlexTugarev when you are fine please help with landing @xieyuanhuata don't have write access

[vince-fugnitto]

I confirmed that it also works correctly to unset the scrollbar for the debug config and toolbar widgets.
Just as an FYI you can add the following line:

this.scrollOptions = undefined

Directly in the:

@postConstruct()
protected init(): void { ... }

[xieyuanhuata]

@vince-fugnitto I think the effect is the same in ctor and init(). Maybe init is better

[vince-fugnitto]

@vince-fugnitto I think the effect is the same in ctor and init(). Maybe init is better

It's up to you, both work fine :) (init would mean less code)