docs: add v1.4.10 forge announcement post and apply csharpier reflow

Forge-Post is required in the tagged tree so forge-announce.yml can read
it during the release-pipeline run. Plus a csharpier reflow on two files
(SymbolPicker.cs, ChatLogWindow.cs) that preflight Block E flagged after
the cycle's comment-tightening sweep — purely whitespace, no behaviour
change.

HellionChat/Ui/ChatLogWindow.cs

@@ -801,10 +801,13 @@ public sealed class ChatLogWindow : Window
         // picker below would pin the popup under the wrong widget.
         if (Plugin.Config.SymbolPickerEnabled)
         {
-            if (ImGuiUtil.IconButton(
+            if (
+                ImGuiUtil.IconButton(
                     FontAwesomeIcon.Smile,
                     "symbol-picker-trigger",
-                    "Insert symbol or FFXIV icon"))
+                    "Insert symbol or FFXIV icon"
+                )
+            )
             {
                 _symbolPicker.OpenPopup();
             }