[GH] (grails-core/fix/multitenant-datasource-qualifier-routing): Workflow run "CI - Groovy Joint Validation Build" failed!

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The GitHub Actions job "CI - Groovy Joint Validation Build" on grails-core.git/fix/multitenant-datasource-qualifier-routing has failed.
Run started by GitHub user jamesfredley (triggered by jamesfredley).

Head commit for run:
4e04e96f81193bfbe1a034ccd9145b145a9a5d72 / James Fredley <ja...@users.noreply.github.com>
fix: preserve explicit datasource qualifiers for MultiTenant entities in allQualifiers()

GormEnhancer.allQualifiers() unconditionally expanded qualifiers to all
connection sources for MultiTenant entities, even when the entity declared
an explicit non-default datasource (e.g., datasource 'secondary'). This
caused silent data routing to the wrong database under DISCRIMINATOR
multi-tenancy mode.

The fix checks whether the entity has an explicit non-default, non-ALL
datasource declaration before expanding qualifiers. When present, the
explicit mapping is preserved.

Added 7 Spock tests covering all combinations:
- MultiTenant with explicit/default/ALL datasource
- Non-MultiTenant with explicit/default/ALL datasource
- MultiTenant with multiple explicit datasources

Report URL: https://github.com/apache/grails-core/actions/runs/22083891080

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