[#11767] Fix consumer POM builder failing to resolve BOM imports from…

[DavidTavoularis]

… settings.xml profile repositories

DefaultConsumerPomBuilder.buildModel() now passes repositories, profiles, and active profile IDs to the ModelBuilderRequest so that BOM imports from non-central repositories (e.g. defined in settings.xml profiles) can be resolved during consumer POM transformation.

DefaultModelBuilder.derive() now respects the request's repositories instead of always reusing the parent session's, and caches the RepositoryFactory lookup.

Includes unit tests for both fixes and an integration test (gh-11767).

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