[AC-2598] Only call PaymentMethodWarningService when FF is on

[amorask-bitwarden]

Type of change

- [X] Bug fix
- [ ] New feature development
- [ ] Tech debt (refactoring, code cleanup, dependency upgrades, etc)
- [ ] Build/deploy pipeline (DevOps)
- [ ] Other

Objective

Adding a payment method using the modal on the Payment Method page currently succeeds, but throws a Toast error because the unneeded invocation of the PaymentMethodWarningService fails. We should only invoke this if the FF is on.

Screen.Recording.2024-05-13.at.3.00.00.PM.mov

[codecov]

Codecov Report

Attention: Patch coverage is 44.44444% with 5 lines in your changes are missing coverage. Please review.

Project coverage is 27.70%. Comparing base (dd41bcb) to head (dd4e8b4).

Files	Patch %	Lines
.../billing/shared/adjust-payment-dialog.component.ts	44.44%	4 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #9161   +/-   ##
=======================================
  Coverage   27.70%   27.70%           
=======================================
  Files        2418     2418           
  Lines       70019    70022    +3     
  Branches    13052    13052           
=======================================
+ Hits        19401    19403    +2     
- Misses      49106    49107    +1     
  Partials     1512     1512           

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[github-actions]

Checkmarx One – Scan Summary & Details – d08e9bb8-6c06-45cf-981b-9c44a0cc1ce5

No New Or Fixed Issues Found