[Bug]: Notes Not Visible After Deleting a Tag Used for Filtering

[runnnnnner200]

Bug Description

If a label is deleted while it is being used to filter notes, newly created notes do not appear in the list until the filter is manually cleared. This creates confusion as the notes are still saved but not shown.

To Reproduce

Steps to reproduce the behavior:

1. Create a new label (e.g., label "a").
2. Switch to filtering notes by label "a".
3. Delete label "a".
4. Create a new note.
5. Observe that the new note does not appear in the list.

Expected Behavior

After deleting a label that is currently being used as a filter, the app should automatically clear the filter so that all notes are visible again.

Screen Recording

https://github.com/user-attachments/assets/6dd688fc-19aa-49c8-80e5-02e934d4d42f

Smartphone:

• Device: generic_x86_64 (Android Studio x86 emulator)
• OS: Android 9.0 (Default Android System Image)
• Version: 1.3.7

Suggested Fix

After a label is deleted, check if the current filter is using that label. If so, automatically reset or clear the label filter to avoid an empty or misleading note list.