No Confirmation When Trying to Add Duplicate Word to Word Bank

[Emanntareq]

Description:
• Reproduction Steps:

1. Try adding the same word to the word bank twice (e.g., "DEVOPS").
   • Expected Behavior: The game should either prevent the word from being added or show a confirmation message that the word is already in the bank.
   • Actual Behavior: Duplicate words can be added to the word bank without warning.
   • Severity: Minor