Ignore middle clicks on pinned tabs
Ignore middle clicks on pinned tabs

Auditors: @NejcZdovc

If you don't mind testing this, I don't have a mouse. But I think this is what we want, to ignore middle clicks.

Fix #6977

timborden/browser-laptop,darkdh/browser-laptop,timborden/browser-laptop,luixxiul/browser-laptop,darkdh/browser-laptop,darkdh/browser-laptop,diasdavid/browser-laptop,diasdavid/browser-laptop,diasdavid/browser-laptop,timborden/browser-laptop,luixxiul/browser-laptop,luixxiul/browser-laptop,timborden/browser-laptop,diasdavid/browser-laptop,luixxiul/browser-laptop,darkdh/browser-laptop