Option for 2-line tabs when vertical tab bar is enabled

[emvaized]

I would like very much to have a native option to enable 2-line tab titles when vertical tab bar is enabled. It appears to me as a much more efficient use of the vertical space, and makes it much easier for me to distinguish tabs. 

Currently two line tabs is only achievable with a Userchrome CSS snippet. I would like to see this option natively, as it will give FF a competitive advantage over other browsers with vertical tabs (Edge, Chrome, Brave and Vivaldi).

#tabbrowser-tabs[orient="vertical"] {
  .tab-label {
    white-space: collapse !important;
    -webkit-line-clamp: 2 !important;
    line-clamp: 2 !important;
    display: block !important;
    overflow: hidden !important;
    line-height: 1.25 !important;
  }
  .tab-content {
    padding-top: 5px !important;
    padding-bottom: 5px !important;
  }

    & .tabbrowser-tab {
      min-height: 45px !important;
    }
}

[Jon]

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