feat: have backpack hide scrollbars when flyout opens

[BeksOmega]

Fixes #1841

Testing

Opened and closed the backpack and observed that scrollbars where hidden and shown.

Additional Info

Dependent on v10.1

[BeksOmega]

@maribethb I need to make this dependent on ^10.1.0 do you think that's worth doing a breaking change for (I kinda don't)? I can also just check if setVisible exists before calling it. That makes this backwards compatible with v10.

[BeksOmega]

@maribethb I need to make this dependent on ^10.1.0 do you think that's worth doing a breaking change for (I kinda don't)? I can also just check if setVisible exists before calling it. That makes this backwards compatible with v10.

I decided to add a check for setVisible

[maribethb]

@maribethb I need to make this dependent on ^10.1.0 do you think that's worth doing a breaking change for (I kinda don't)? I can also just check if setVisible exists before calling it. That makes this backwards compatible with v10.

I think adding the check to make it backwards compatible is best option. Otherwise, yeah, it would have to be a breaking change, otherwise npm might update the plugin automatically to an incompatible version :/