[R] Use C++ DayOfWeekOptions in wday implementation instead of manually calculating via Expression

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#10598

Reporter: Nicola Crane / @thisisnic
Assignee: Nicola Crane / @thisisnic
Watchers: Rok Mihevc / @rok

_{Note: This issue was originally created as ARROW-13279. Please see the migration documentation for further details.}

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Nicola Crane / @thisisnic:
This is not needed as it was implemented in the original PR

 

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Rok Mihevc / @rok:
Oh yeah, sorry forgot to say :))

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Nicola Crane / @thisisnic:
Nah, my bad for not taking a proper look at it ;)