drupalorg-3267279

Issue #3181778 by quietone, longwave, aldairsoares, beatrizrodrigues, Aline Teixeira Ramos, KapilV, raman.b, anushrikumari, CChiste, mallezie, Ratan Priya, rakesh.regar, Kevin.Notari, vicheldt, mauryarahul11, yogeshmpawar, bbrala, alexpott, bruno.bicudo: [w/c September 17th] Replace t() with $this->t() in all plugins

(cherry picked from commit 6bbfb055)