[Runtime] Fix swift_bridgeObjectRetain on ARM64 Linux.

The tail call of swift_retain isn't correct there. Revert back to a non-tail call for all !SWIFT_OBJC_INTEROP for now.

rdar://102152616

Author: mikeash

stdlib/public/runtime/SwiftObject.mm

@@ -609,7 +609,10 @@ static bool isBridgeObjectTaggedPointer(void *object) {
   // bit set.
   SWIFT_MUSTTAIL return objcRetainAndReturn(object);
 #else
-  return swift_retain(static_cast<HeapObject *>(objectRef));
+  // No tail call here. When !SWIFT_OBJC_INTEROP, the value of objectRef may be
+  // different from that of object, e.g. on Linux ARM64.
+  swift_retain(static_cast<HeapObject *>(objectRef));
+  return object;
 #endif
 }