title: SwiftUI ForEach of dictionary identified issue
body: <p>Using the given code below I try to iterate over the dictionary <code>wordList</code> which fails with the issue <code>Instance method 'identified(by:)' requires that '(key: Int, value: [String : String])' conform to 'Hashable'</code>.</p>
  
  <p>So my guess is that I have either to apply the protocol <code>Hashable</code> somehow to the <code>Int</code> of the dictionary or there may be another solution which concerns the usage of <code>.identified(by:)</code></p>
  
  <p>Thank you very much for the help!</p>
  
  <pre><code>struct ContentView: View {
      @State var wordOrder = ["DE", "EN"]
  
      let wordList: [Int: [String: String]] = [
          0: [
              "DE": "Hallo Welt",
              "EN": "hello world"
          ],
          1: [
              "DE": "Tschüss",
              "EN": "goodbye"
          ],
          2: [
              "DE": "vielleicht",
              "EN": "maybe"
          ]
      ]
  
      var body: some View {
          Group {
              NavigationView {
                  List() {
                      ForEach(wordList.identified(by: \.self)) { wordListEntry in
                          let lang1 = wordListEntry[wordOrder[0]]
                          let lang2 = wordListEntry[wordOrder[1]]
                          WordRow(lang1, lang2)
                      }
                  }
                  .navigationBarTitle(Text("Alle Wörter"))
              }
          }
      }
  }
  </code></pre>