[stdlib] Add consuming/owned annotations to Collection implementations (swiftlang#19360)

* Add consuming/owned annotations to Collection implementations

* Update SILOptimizer tests

* Fix access_marker_verify test

* XFAIL reconstruct_type_from_mangled_name

Author: airspeedswift

stdlib/public/core/String.swift

@@ -979,7 +979,7 @@ extension Sequence where Element: StringProtocol {
 // This overload is necessary because String now conforms to
 // BidirectionalCollection, and there are other `joined` overloads that are
 // considered more specific. See Flatten.swift.gyb.
-extension BidirectionalCollection where Iterator.Element == String {
+extension BidirectionalCollection where Element == String {
   /// Returns a new string by concatenating the elements of the sequence,
   /// adding the given separator between each element.
   ///