Code Quality: Handle malformed localized format strings in search header (#17735)

Co-authored-by: seer-by-sentry[bot] <157164994+seer-by-sentry[bot]@users.noreply.github.com>

Author: seer-by-sentry[bot]

src/Files.App/ViewModels/ShellViewModel.cs

@@ -2736,9 +2736,25 @@ public async Task SearchAsync(FolderSearch search)
 			await ApplyFilesAndFoldersChangesAsync();
 			EmptyTextType = EmptyTextType.None;
 
-			SearchHeaderTitle = !string.IsNullOrEmpty(search.Query)
-				? string.Format(Strings.SearchResultsFor.GetLocalizedResource(), search.Query)
-				: string.Empty;
+			if (!string.IsNullOrEmpty(search.Query))
+			{
+				try
+				{
+					// Try to format the localized string with the search query
+					SearchHeaderTitle = string.Format(Strings.SearchResultsFor.GetLocalizedResource(), search.Query);
+				}
+				catch (FormatException ex)
+				{
+					// Handle malformed localized format strings (e.g., incorrect placeholders in translation)
+					// Fallback to a safe default format
+					App.Logger.LogWarning(ex, "Malformed localized format string for SearchResultsFor. Using fallback format.");
+					SearchHeaderTitle = $"Search results for \"{search.Query}\"";
+				}
+			}
+			else
+			{
+				SearchHeaderTitle = string.Empty;
+			}
 
 			if (SearchIconBitmapImage is null)
 				SearchIconBitmapImage ??= await UIHelpers.GetSearchIconResource();