Rename the PolarisEvent entity class to EventEntity

[adutra]

The org.apache.polaris.core.entity.PolarisEvent class has a confusing name since it clashes with org.apache.polaris.service.events.PolarisEvent and does not bear the Entity suffix that other entity classes sport. This change fixes that.

Checklist

• 🛡️ Don't disclose security issues! (contact security@apache.org)
• 🔗 Clearly explained why the changes are needed, or linked related issues: Fixes #
• 🧪 Added/updated tests with good coverage, or manually tested (and explained how)
• 💡 Added comments for complex logic
• 🧾 Updated CHANGELOG.md (if needed)
• 📚 Updated documentation in site/content/in-dev/unreleased (if needed)

[Copilot]

Pull request overview

This PR resolves a naming collision between the service-layer org.apache.polaris.service.events.PolarisEvent and the core entity currently named org.apache.polaris.core.entity.PolarisEvent by renaming the core entity to EventEntity (aligning with other *Entity types).

Changes:

• Rename the core persistence entity class PolarisEvent to EventEntity.
• Update event persistence/listener plumbing to use EventEntity throughout (PolarisPersistenceEventListener, in-memory buffer listener).
• Update JDBC model conversion and related tests to use EventEntity.

Reviewed changes

Copilot reviewed 16 out of 16 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
runtime/service/src/test/java/org/apache/polaris/service/events/listeners/PolarisPersistenceEventListenerTest.java	Updates listener tests to assert against EventEntity instead of the old entity name.
runtime/service/src/test/java/org/apache/polaris/service/events/listeners/inmemory/InMemoryBufferEventListenerTestBase.java	Updates test helper to construct EventEntity and use its ResourceType.
runtime/service/src/test/java/org/apache/polaris/service/events/listeners/inmemory/InMemoryBufferEventListenerIntegrationTest.java	Updates integration assertions and result conversion types to EventEntity.
runtime/service/src/main/java/org/apache/polaris/service/events/listeners/PolarisPersistenceEventListener.java	Updates the persisted event object created from service events to EventEntity.
runtime/service/src/main/java/org/apache/polaris/service/events/listeners/inmemory/InMemoryBufferEventListener.java	Updates the in-memory buffering/persistence pipeline generics and method signatures to EventEntity.
polaris-core/src/main/java/org/apache/polaris/core/persistence/TransactionWorkspaceMetaStoreManager.java	Updates the writeEvents API surface to accept List<EventEntity>.
polaris-core/src/main/java/org/apache/polaris/core/persistence/transactional/AbstractTransactionalPersistence.java	Updates the writeEvents signature to List<EventEntity>.
polaris-core/src/main/java/org/apache/polaris/core/persistence/BasePersistence.java	Updates the writeEvents SPI signature to List<EventEntity>.
polaris-core/src/main/java/org/apache/polaris/core/entity/PolarisEventManager.java	Updates the default writeEvents delegation signature to List<EventEntity>.
polaris-core/src/main/java/org/apache/polaris/core/entity/EventEntity.java	Renames the core entity class and constructor to EventEntity.
persistence/relational-jdbc/src/test/java/org/apache/polaris/persistence/relational/jdbc/models/ModelEventTest.java	Updates JDBC model conversion tests to use EventEntity.
persistence/relational-jdbc/src/test/java/org/apache/polaris/persistence/relational/jdbc/DatasourceOperationsTest.java	Updates JDBC batch write test data to use EventEntity.ResourceType.
persistence/relational-jdbc/src/main/java/org/apache/polaris/persistence/relational/jdbc/models/ModelEvent.java	Updates model converter interface and conversion helpers to/from EventEntity.
persistence/relational-jdbc/src/main/java/org/apache/polaris/persistence/relational/jdbc/JdbcBasePersistenceImpl.java	Updates JDBC persistence implementation to accept List<EventEntity>.
persistence/nosql/persistence/metastore/src/main/java/org/apache/polaris/persistence/nosql/metastore/NoSqlMetaStoreManager.java	Updates writeEvents signature to List<EventEntity> (still unsupported for NoSQL).
persistence/nosql/persistence/metastore/src/main/java/org/apache/polaris/persistence/nosql/metastore/NonFunctionalBasePersistence.java	Updates writeEvents signature to List<EventEntity>.