[Firestore] Remove DocumentID setter warning (#12756)

Author: andrewheard

Firestore/CHANGELOG.md

@@ -1,3 +1,8 @@
+# Unreleased
+- [changed] Passing a non-nil value to the `@DocumentID` property wrapper's
+  setter no longer logs a warning since it discouraged valid patterns,
+  e.g., updating the document ID after the document is created in Firestore. (#12756)
+
 # 10.24.0
 - [feature] Enable queries with range & inequality filters on multiple fields. (#12416)
 

Firestore/Swift/Source/Codable/DocumentID.swift

@@ -121,12 +121,7 @@ public struct DocumentID<Value: DocumentIDWrappable & Codable>:
 
   public var wrappedValue: Value? {
     get { value }
-    set {
-      if let someNewValue = newValue {
-        logIgnoredValueWarning(value: someNewValue)
-      }
-      value = newValue
-    }
+    set { value = newValue }
   }
 
   private func logIgnoredValueWarning(value: Value) {