[Frame] disable sending billingAddress if form is disabled or not edited

[jheng-hao-lin-cko]

Issue

PIMOB-1767

Proposed changes

Problem Currently the BillingAddress is including the payment tokenisation process no matter whether the form is enabled or whether the BillingAddress is edited by the user. Which causes the SDK sending a default empty BillingAddress with the default country instead of a null value.

Solution

• Add a new field PaymentStateManager#isBillingAddressEnabled: MutableStateFlow<Boolean> to store a boolean of payment form is enabled.
• Add a new method BillingAddress#isEdited() to compare the current data is same as a default one.
• Use the field and method mentioned above in PayButtonViewModel#provideCardData to decide whether we need to provide the BillingAddress data. We should provide it only when the billing address is enabled and the address is edited.

Checklist

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• [x] Reviewers assigned
• [x] I have performed a self-review of my code and manual testing
• [x] Lint and unit tests pass locally with my changes
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] I have added necessary documentation (if applicable)

Further comments

If this is a relatively large or complex change, kick off the discussion by explaining why you choose the solution you did and what alternatives you considered, etc...

[fabio-insolia-cko]

LGTM but let's wait for @chintan-soni-cko before merging it

[jheng-hao-lin-cko]

LGTM. Can you check? why verification-full is unable to send the slack message? here

The secret was not setup to expose to PR and now have updated it. it works fine now.