typo Platform to client (#8678)
typo Platform to client (#8678)

typo `Platform.is.winphone` should be `client.is.winphone` and Platform.is.safari to `client.is.safari`
quasarframework/quasar,quasarframework/quasar,rstoenescu/quasar-framework,quasarframework/quasar,quasarframework/quasar,rstoenescu/quasar-framework,rstoenescu/quasar-framework