Re-enable `JdbcAggregateTemplateSchemaIntegrationTests` for Oracle

After upgrading the Oracle driver to 23.26.3.0.0 (#2358), the test started to fail in the context of multi-schema key generation.

[ERROR] org.springframework.data.jdbc.core.JdbcAggregateTemplateSchemaIntegrationTests.insertFindUpdateDelete -- Time elapsed: 0.009 s <<< ERROR!
  org.springframework.jdbc.BadSqlGrammarException: PreparedStatementCallback; bad SQL grammar [INSERT INTO "OTHER"."DUMMY_ENTITY" ("NAME") VALUES (?)]
  	at org.springframework.jdbc.support.SQLExceptionSubclassTranslator.doTranslate(SQLExceptionSubclassTranslator.java:112)
  	at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:102)
  	at org.springframework.jdbc.core.JdbcTemplate.translateException(JdbcTemplate.java:1549)
  	at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:689)
  	at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:997)
  	at org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate.update(NamedParameterJdbcTemplate.java:367)
  	at org.springframework.data.jdbc.core.convert.IdGeneratingInsertStrategy.execute(IdGeneratingInsertStrategy.java:65)
  	at org.springframework.data.jdbc.core.convert.DefaultDataAccessStrategy.insert(DefaultDataAccessStrategy.java:133)
  	at org.springframework.data.jdbc.core.JdbcAggregateChangeExecutionContext.executeInsertRoot(JdbcAggregateChangeExecutionContext.java:76)
  	at org.springframework.data.jdbc.core.AggregateChangeExecutor.execute(AggregateChangeExecutor.java:89)
  	at org.springframework.data.jdbc.core.AggregateChangeExecutor.lambda$executeSave$0(AggregateChangeExecutor.java:62)
  	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
  	at org.springframework.data.relational.core.conversion.SaveBatchingAggregateChange.forEachAction(SaveBatchingAggregateChange.java:70)
  	at org.springframework.data.jdbc.core.AggregateChangeExecutor.executeSave(AggregateChangeExecutor.java:62)
  	at org.springframework.data.jdbc.core.JdbcAggregateTemplate.performSave(JdbcAggregateTemplate.java:598)
  	at org.springframework.data.jdbc.core.JdbcAggregateTemplate.save(JdbcAggregateTemplate.java:211)
  	at org.springframework.data.jdbc.core.JdbcAggregateTemplateSchemaIntegrationTests.insertFindUpdateDelete(JdbcAggregateTemplateSchemaIntegrationTests.java:50)
  Caused by: java.sql.SQLSyntaxErrorException: ORA-04043: Object "OTHER" does not exist.
  
  https://docs.oracle.com/error-help/db/ora-04043/
  	at oracle.jdbc.driver.T4CTTIoer11.processError(T4CTTIoer11.java:719)
  	at oracle.jdbc.driver.T4CTTIoer11.processError(T4CTTIoer11.java:614)
  	at oracle.jdbc.driver.T4CTTIoer11.processError(T4CTTIoer11.java:609)
  	at oracle.jdbc.driver.T4CTTIfun.processError(T4CTTIfun.java:1687)
  	at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:972)
  	at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:788)
  	at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:241)
  	at oracle.jdbc.driver.T4C8Odsy.doODSY(T4C8Odsy.java:211)
  	at oracle.jdbc.driver.T4C8Odsy.doODSYTable(T4C8Odsy.java:150)
  	at oracle.jdbc.driver.T4CConnection.getColumnMetaData(T4CConnection.java:9203)
  	at oracle.jdbc.driver.T4CConnection.doDescribeTable(T4CConnection.java:9191)
  	at oracle.jdbc.driver.AutoKeyInfo.initialize(AutoKeyInfo.java:553)
  	at oracle.jdbc.driver.OraclePreparedStatement.initializeAutoKeyInfo(OraclePreparedStatement.java:12399)
  	at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3966)
  	at oracle.jdbc.driver.OraclePreparedStatement.doExecuteLargeUpdate(OraclePreparedStatement.java:4352)
  	at oracle.jdbc.driver.OraclePreparedStatement.executeLargeUpdate(OraclePreparedStatement.java:4329)
  	at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:4304)
  	at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeUpdate(OraclePreparedStatementWrapper.java:1008)
  	at com.zaxxer.hikari.pool.ProxyPreparedStatement.executeUpdate(ProxyPreparedStatement.java:61)
  	at com.zaxxer.hikari.pool.HikariProxyPreparedStatement.executeUpdate(HikariProxyPreparedStatement.java)
  	at org.springframework.jdbc.core.JdbcTemplate.lambda$update$1(JdbcTemplate.java:998)
  	at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:670)
  	... 13 more