GuestLog - StayEntry pages fixes

- Details/New - Fixed time field binding. Now it binds directly to the Model instead of using temp TimeSpans.
- New - Fixed StayEntry validation to allow creating Stays with a DateOut in the past.
- List - Added ordering to db results so limit behaves in a deterministic way. Fixed default search so stays created today are shown.

src/Somnia.GuestLog/Components/Pages/StayEntries/StayEntryDetail.razor

@@ -27,7 +27,8 @@
 
 @if (stayModel is not null)
 {
-    <StayEntryForm Model="stayModel" ReadOnly="true" />
+    <StayEntryForm Model="stayModel" FormMode="FormMode.ReadOnly" />
+    <MudText Class="mt-4">@CreateTimeString</MudText>
 }
 
 
@@ -41,6 +42,22 @@
 
     StayEntryDTO? stayModel = null;
 
+    private string? CreateTimeString
+    {
+        get
+        {
+            if (stayModel is null)
+            {
+                return null;
+            }
+
+            List<string> textList = [];
+            textList.Add($"Created at: {stayModel.CreateTime?.ToString() ?? "???"}");
+            textList.Add($"Last Update Time: {stayModel.UpdateTime?.ToString() ?? "???"}");
+            return string.Join("; ", textList);
+        }
+    }
+
     protected override async Task OnInitializedAsync()
     {
         @* if (StayId is default)