fix(documentview): handle text view initialization errors

Wraps GetTextView in a try-catch to handle InvalidOperationException when the text view is still initializing, such as during document restoration. This prevents crashes by allowing the view to remain null if initialization is incomplete.

Author: madskristensen

src/toolkit/Community.VisualStudio.Toolkit.Shared/Documents/DocumentView.cs

@@ -1,4 +1,4 @@
-using Microsoft.VisualStudio.Shell;
+using Microsoft.VisualStudio.Shell;
 using Microsoft.VisualStudio.Shell.Interop;
 using Microsoft.VisualStudio.Text;
 using Microsoft.VisualStudio.Text.Editor;
@@ -23,7 +23,17 @@ internal DocumentView(IVsWindowFrame nativeFrame)
         {
             ThreadHelper.ThrowIfNotOnUIThread();
             WindowFrame frame = new(nativeFrame);
-            IWpfTextView? view = VsShellUtilities.GetTextView(nativeFrame)?.ToIWpfTextView();
+            IWpfTextView? view = null;
+
+            try
+            {
+                view = VsShellUtilities.GetTextView(nativeFrame)?.ToIWpfTextView();
+            }
+            catch (System.InvalidOperationException)
+            {
+                // Text view is still initializing - leave view as null.
+                // This can happen during document restoration when opening a solution.
+            }
 
             WindowFrame = frame;
             TextView = view;