User Can Create Empty Word in Word Bank

[Hadiqa13]

Reproduction Steps:

1. Navigate to the "Word Bank" tab.
2. Try to add an empty word (leave the input field blank).
3. Click the "Add Word" button.

Expected Behavior:

1. The system should prevent users from adding empty words.

Actual Behavior:

1. The user is able to add an empty word to the word bank.

Severity Level: High

Assigned to: You