fix: use integration domain for reporting endpoints

[mattbodle]

Summary

• Updates the logging and error reporting services so their default endpoints are derived from the integration domain used to load the Rokt SDK assets.
• Keeps explicit loggingUrl and errorUrl kit settings as overrides.
• Preserves the apps.rokt-api.com fallback when no integration domain is configured.
• Adds regression coverage verifying that mParticle.Rokt.domain = 'rkt.carrot.com' sends to https://rkt.carrot.com/v1/log and https://rkt.carrot.com/v1/errors.

Testing Plan

• npm run lint
• npm run test
• npm run build completed with exit code 0; Vite still emits existing vite-plugin-dts diagnostics around mParticle identity types on untouched lines.

[mattbodle]

Verified the regression against the previous code path.

I created an isolated copy of origin/main, copied in only the new regression test, and ran:

npx vitest run -t "should default registered reporting services to the integration domain"

Result on old code: FAIL. The old implementation received:

https://apps.rokt-api.com/v1/log
https://apps.rokt-api.com/v1/errors

when the test expected:

https://rkt.carrot.com/v1/log
https://rkt.carrot.com/v1/errors

Running the same focused test on this PR branch passes.

[mparticle-automation]

🎉 This PR is included in version 1.28.3 🎉

The release is available on:

• v1.28.3
• GitHub release

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