SDK-325 BCIT Migrate temp domain setup to final custom domain

[joaodordio]

🔹 Jira Ticket(s) if any

• SDK-325

✏️ Description

Migrating the BCIT integration tests off the temporary tsetester.com domain and onto the official engineering-owned bcittesting.com (procured via IT-4410).

What changed

• integration-tests/src/main/AndroidManifest.xml: the two autoVerify intent filters for App Links now use bcittesting.com and links.bcittesting.com instead of tsetester.com / links.tsetester.com
• DeepLinkIntegrationTest.kt: TEST_APP_LINK_URL, TEST_BROWSER_LINK_URL and TEST_WRAPPED_LINK_URL constants point at the new domain. The wrapped URL value is stubbed with a TODO_REGENERATE_TOKEN placeholder and a TODO(SDK-325) comment, since the _t/_m/_e tokens are tied to the old Iterable project.

Why the wrapped URL is a placeholder

The wrapped link tokens are project-scoped, so they will only become valid once SDK-36 (the BCIT project migration to the eng org) lands and we can regenerate the link against the new project. I left a loud TODO_REGENERATE_TOKEN so any test run that uses it fails fast with a 404 instead of silently passing or hitting the old project.

Dependencies / sequencing

This PR is intentionally not ready to merge yet. The order is:

1. Land SDK-36 (new Mobile SDK Testing project)
2. Land iterable-infra #15167 so links.bcittesting.com resolves and serves AASA / assetlinks
3. Configure the tracking + destination domain on the new Iterable project, upload AASA / assetlinks. The current Android assetlinks.json on links.tsetester.com is broken (malformed SHA-256 fingerprints, plus the package name does not match com.iterable.integration.tests), so I will regenerate it from scratch with the real signing-key SHA-256
4. Regenerate the wrapped link, replace the TODO_REGENERATE_TOKEN in this PR, then merge