Compatibility with commerce 8.x-2.16

[arlina-espinoza]

While working on apigee/apigee-devportal-kickstart-drupal#319, I noticed some entity schemas changes of commerce entities, starting from commerce 8.x-2.16.
This PR updates the apigee_m10n_add_credit module so that it is compatible with the latest Commerce release.
Related: https://www.drupal.org/node/3090561

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[shadcn]

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[cnovak]

Everything installed correctly, but the "add credit" button is not on the prepaid balance page:

The requirements were not completed:

Is this expected?

[shadcn]

@cnovak Yes. The add credit products are only created for you in kickstart. In apigee_m10n they are shown as requirements only.

[arlina-espinoza]

@cnovak The product type, and products, and other config only gets installed when you do it through the Kickstart installer. If you are installing the apigee_m10n_add_credit module afterwards, you need to go through the setup in the requirements page.
Note: the "add credit products" requirement will show up after the "add credit product type" has been completed, because it is a prerequisite.

[cnovak]

I do not understand above comments @arlina-espinoza @arshad , but @arlina-espinoza pointed out that you need to add apigee/apigee-devportal-kickstart-drupal#323 to see full functionality.

[cnovak]

Validated a few more times LGTM

[arlina-espinoza]

Thanks @cnovak . Added a follow up ticket to improve the payment gateway setup: #227