feat(payment): test appswitch bcp

[bc-yaroslav-zhmutskyi]

What/Why?

To test app switch changes

Rollout/Rollback

Revert

Testing

Manual

[sentry]

Bug: The isBuyNowFlow parameter is not passed to renderButton(), causing it to be undefined and incorrectly enabling app switch for buy now flows.
_{Severity: CRITICAL | Confidence: 0.95}

🔍 Detailed Analysis

The isBuyNowFlow parameter is calculated in the initialize method but not passed to the renderButton method. As a result, isBuyNowFlow is undefined within renderButton(). This causes the condition !isBuyNowFlow to evaluate to true, leading to appSwitchWhenAvailable: true being incorrectly included in the button options for buy now flows. This can result in unintended app switch behavior during buy now checkout flows, breaking the feature.

💡 Suggested Fix

Pass the isBuyNowFlow parameter from the initialize method to the renderButton method when calling it, similar to the PayPalCommerceButtonStrategy implementation.

🤖 Prompt for AI Agent

Review the code at the location below. A potential bug has been identified by an AI
agent.
Verify if this is a real issue. If it is, propose a fix; if not, explain why it's not
valid.

Location:
packages/bigcommerce-payments-integration/src/bigcommerce-payments/bigcommerce-payments-button-strategy.ts#L115-L118

Potential issue: The `isBuyNowFlow` parameter is calculated in the `initialize` method
but not passed to the `renderButton` method. As a result, `isBuyNowFlow` is `undefined`
within `renderButton()`. This causes the condition `!isBuyNowFlow` to evaluate to
`true`, leading to `appSwitchWhenAvailable: true` being incorrectly included in the
button options for buy now flows. This can result in unintended app switch behavior
during buy now checkout flows, breaking the feature.

_{Did we get this right? 👍 / 👎 to inform future reviews.}