Make AddPaymentMenu dynamic

[kevinksullivan]

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Action Performed:

1. Login to NewDot on web
2. Select profile > payments
3. Select add payment method
4. Change screen width

Expected Result:

The payment method dropdown should show move along with the rest of the screen

Actual Result:

The payment method dropdown is in a fixed position on the screen.

Platform:

Web

Reproducible in staging?: Yes
Reproducible in production?: Tes

Notes/Photos/Videos:

http://g.recordit.co/PSG52y2iA6.gif

Expensify/Expensify Issue URL: https://github.com/Expensify/Expensify/issues/191203

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[MelvinBot]

Triggered auto assignment to @alexpensify (AutoAssignerTriage), see https://stackoverflow.com/c/expensify/questions/4749 for more details.

[MelvinBot]

Triggered auto assignment to @MariaHCD (Engineering), see https://stackoverflow.com/c/expensify/questions/4319 for more details.

[MelvinBot]

Triggered auto assignment to @laurenreidexpensify (External), see https://stackoverflow.com/c/expensify/questions/8582 for more details.