[REG2.066a] Issue 13077 - std.range.array with shared InputRangeObject

https://issues.dlang.org/show_bug.cgi?id=13077

Ping: @monarchdodra
Shouldn't the result of a cast always be non-ref?  Couldn't this block be replaced by changing the original line to

`emplaceRef!T(bigData[len], cast(Unqual!T)item);`
?