Show all data sources on the embeddings page from the start

app/MindWork AI Studio/Pages/Embeddings.razor

@@ -19,6 +19,12 @@
             <MudChip T="string" Color="Color.Default" Variant="Variant.Filled">@string.Format(T("Skipped files: {0}"), this.TotalPermanentlySkippedFiles)</MudChip>
             <MudChip T="string" Color="Color.Error" Variant="Variant.Filled">@string.Format(T("Failed files: {0}"), this.TotalFailedFiles)</MudChip>
         </MudStack>
+        @if (this.IsWorkingThroughDataSources)
+        {
+            <MudText Typo="Typo.body2" Class="mt-2">
+                @string.Format(T("Data source {0} of {1} is being worked on. The others are waiting their turn."), this.CurrentDataSourceNumber, this.Statuses.Count)
+            </MudText>
+        }
     </MudPaper>
 
     @if (this.Statuses.Count == 0)