title: Remove top padding from `List` in SwiftUI
body: <p>I've seen similar questions like this one here on Stack Overflow, but none of them have been able to answer my question.</p>
  <p>I have created a <code>List</code>, but I want to remove the padding space (marked with a red arrow) above the content in the <code>List</code>. How can I remove it when using a <code>GroupedListStyle</code>?</p>
  <p><a href="https://i.stack.imgur.com/XHyxmm.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/XHyxmm.jpg" alt="Screenshot" /></a></p>
  <p>This is a <code>List</code> within a <code>VStack</code> within a <code>NavigationView</code> that is displayed via <code>fullscreenCover</code>:</p>
  <pre class="lang-swift prettyprint-override"><code>var body: some View {
    NavigationView {
      VStack {
        taskEventPicker
        myList
      }
      .navigationBarTitle(&quot;Add Task&quot;, displayMode: .inline)
    }
  }
  </code></pre>
  <p>where <code>taskEventPicker</code> is a segmented <code>Picker</code> (boxed in green):</p>
  <pre class="lang-swift prettyprint-override"><code>var taskEventPicker: some View {
    Picker(&quot;Mode&quot;, selection: $selection) { /* ... */ }
    .pickerStyle(SegmentedPickerStyle())
    .padding()
  }
  </code></pre>
  <p>and <code>myList</code> is the form in question (boxed in yellow):</p>
  <pre class="lang-swift prettyprint-override"><code>var myList: some View {
    List { /* ... */ }
    .listStyle(GroupedListStyle())
  }
  </code></pre>
  <p><strong>What I've Tried</strong></p>
  <ul>
  <li><a href="https://stackoverflow.com/a/62881662/12101201">Removing the header of the list</a></li>
  <li><a href="https://stackoverflow.com/a/62882003/12101201">Hiding the Navigation Bar title</a></li>
  <li><a href="https://stackoverflow.com/a/58683887/12101201">Setting <code>UITableView.appearance().tableHeaderView</code> to an empty frame</a></li>
  <li><a href="https://stackoverflow.com/a/63607411/12101201">Attempting <code>UITableView.appearance().contentInset.top = -35</code></a></li>
  <li><a href="https://stackoverflow.com/a/58192802/12101201">Setting <code>listRowInsets</code></a> (this affects all list rows)</li>
  </ul>
  <p>Note: I'm looking for an answer that can apply to the <code>GroupedListStyle</code>. I understand that this issue does not occur with <code>PlainListStyle</code>. This padding issue also occurs with the default <code>listStyle</code>.</p>
  <p>Thanks for the help!</p>
  <p>Xcode version: 12.5</p>