feat: enhance tooltip accessibility with ARIA attributes and keyboard navigation

[Suke2004]

Description:
The dictionary tooltip lacks accessibility support for screen readers and keyboard navigation. It should follow WAI-ARIA guidelines to ensure inclusivity for all users.

✅ Acceptance Criteria:

• Add role="tooltip" and appropriate aria-label attributes.

• Enable keyboard navigation:

  • Enter to open
  • Escape to close

• Manage focus states properly when tooltip opens.

• Confirm tooltip content is announced correctly by screen readers (e.g., NVDA or VoiceOver).

[bharateshwq]

Hey @BennyPerumalla ,
Id like to work on this

[BennyPerumalla]

@bharateshwq Assigned it, Go on