bugfix: Weird Unmovable scroll bar in the tablist section #2293

[busy-panda]

Fixes #2293

There is an unnecessary "overflow: scroll" and "-webkit-scrollbar {display: none }" on tabs, and scrollbars appear when a more recent version of electron is used, where -webkit-scrollbar was removed

And as discovered by @Its-treason the nix build overwrite the electron version, that explain why some users see the scrollbars

I looked into the Nix build file: https://github.com/NixOS/nixpkgs/blob/master/pkgs/by-name/br/bruno/package.nix and the electron version in indeed overwritten:

https://github.com/NixOS/nixpkgs/blob/master/pkgs/by-name/br/bruno/package.nix#L100-L112

The scrollbars don't appear with the current electron version thanks to :

&::-webkit-scrollbar {
      display: none;
    }

But it can be removed if "overflow: scroll" is removed

Description

Here is the demonstration that the overflow: scroll is causing the problem

bruno.mp4

This second video shows that removing overflow: scroll does not change anything with the current electron version, so there is no regression.

bruno2.mp4

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• The pull request does not introduce any breaking changes
• I have added screenshots or gifs to help explain the change if applicable.
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