Expose QModal close options to QDialog (#1572)
Expose QModal close options to QDialog (#1572)

Allow finer-grained control over when QDialog will close, without losing the new `preventClose` option from overriding both.
fsgiudice/quasar,fsgiudice/quasar,quasarframework/quasar,quasarframework/quasar,rstoenescu/quasar-framework,pdanpdan/quasar,pdanpdan/quasar,pdanpdan/quasar,pdanpdan/quasar,rstoenescu/quasar-framework,fsgiudice/quasar,quasarframework/quasar,quasarframework/quasar,rstoenescu/quasar-framework