perf(QStepper): small tweak to content render fn
perf(QStepper): small tweak to content render fn

fsgiudice/quasar,rstoenescu/quasar-framework,pdanpdan/quasar,pdanpdan/quasar,rstoenescu/quasar-framework,quasarframework/quasar,pdanpdan/quasar,quasarframework/quasar,quasarframework/quasar,quasarframework/quasar,rstoenescu/quasar-framework,fsgiudice/quasar,pdanpdan/quasar,fsgiudice/quasar