Revert "File scoped namespaces"

This reverts commit d31d8f574e.

Wino.Messages/Client/Mails/HtmlRenderingRequested.cs

@@ -1,7 +1,8 @@
-namespace Wino.Messaging.Client.Mails;
-
-/// <summary>
-/// When existing a new html is requested to be rendered due to mail selection or signature.
-/// </summary>
-/// <param name="HtmlBody">HTML to render in WebView2.</param>
-public record HtmlRenderingRequested(string HtmlBody);
+namespace Wino.Messaging.Client.Mails
+{
+    /// <summary>
+    /// When existing a new html is requested to be rendered due to mail selection or signature.
+    /// </summary>
+    /// <param name="HtmlBody">HTML to render in WebView2.</param>
+    public record HtmlRenderingRequested(string HtmlBody);
+}