When Thank You messaging is shown, stop the tunnel

[quanganhdo]

Task/Issue URL: https://app.asana.com/0/0/1206944215322925/f
Tech Design URL:
CC:

Description:

Steps to test this PR:

1. Under Debug > NetP > Choose Reset Thank you messaging
2. Remove all builds from your device after making sure you are waitlisted
3. Install the new build
4. Connect to the VPN and authenticate as internal user
5. Expect: Thank you messaging and tunnel should be stopped

Copy Testing:

• Use of correct apostrophes in new copy, ie ’ rather than '

Orientation Testing:

• Portrait
• Landscape

Device Testing:

• iPhone SE (1st Gen)
• iPhone 8
• iPhone X
• iPhone 14 Pro
• iPad

OS Testing:

• iOS 14
• iOS 15
• iOS 16

Theme Testing:

• Light theme
• Dark theme

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Internal references:

Software Engineering Expectations
Technical Design Template