Fix(notes): Hide hidden models in notes section

This commit fixes a bug where hidden models were still visible and selectable in the notes section. The following changes were made:

- The model dropdown in the chat section of the note editor is now filtered to exclude hidden models.
- The default model selection logic in the note editor is now filtered to exclude hidden models.

src/lib/components/notes/NoteEditor.svelte

@@ -872,7 +872,8 @@ Provide the enhanced notes in markdown format. Use markdown syntax for headings,
 		}
 
 		if (!selectedModelId) {
-			selectedModelId = $models.at(0)?.id || '';
+			selectedModelId =
+				$models.filter((model) => !(model?.info?.meta?.hidden ?? false)).at(0)?.id || '';
 		}
 
 		const dropzoneElement = document.getElementById('note-editor');