Use `Pageable.unpaged(sort)` for sorted unpaged pageable

[quaff]

trafficstars

Fix

java.lang.UnsupportedOperationException
	at org.springframework.data.domain.Unpaged.getPageNumber(Unpaged.java)
	at org.springframework.data.web.ReactivePageableHandlerMethodArgumentResolver.resolveArgumentValue(ReactivePageableHandlerMethodArgumentResolver.java)

[themadprofessor]

Would it be possible to handle sorted unpaged pagables as well?

[quaff]

Would it be possible to handle sorted unpaged pagables as well?

Thanks for your suggestion, I've updated the PR.

[odrotbohm]

That's been polished and merged. Thanks!