fix(bigquery-jdbc): correct usage-telemetry counts and disable telemetry in integration tests - #14940

Telemetry count fixes

• BigQueryDriver.connect: fetch DatabaseMetaData once for the startup log line instead of
  four times, so a new connection no longer records 4× DRIVER_FEATURE_METADATA_RETRIEVAL.
• BigQueryDriver.connect: resolve AuthenticationType immediately after URL parsing so failed
  ConnectionAttempt records carry the real auth type instead of AUTHENTICATION_TYPE_UNSPECIFIED.
• BigQueryDriver.connect: throw BigQueryJdbcException on IOException instead of returning
  null, as JDBC requires for an accepted URL that fails. Behaviour change for callers that
  relied on the null return.
• BigQueryStatement: cancel() now records DRIVER_FEATURE_STATEMENT_CANCEL and delegates to a
  new private cancelInternal(); close() calls cancelInternal() directly, so closing a
  statement is no longer counted as a user-initiated cancel.
• BigQueryPooledConnection: remove the DRIVER_FEATURE_METADATA_RETRIEVAL record from the
  pooled wrapper's getMetaData(); the delegate already records it (was double-counted).
• BigQueryParameterHandler.setParameter(int, Object, Class): record
  DRIVER_FEATURE_PARAMETER_BINDING like the other three overloads. This is the path behind
  PreparedStatement.setInt/setLong/setString/..., so the most common bindings were uncounted.

Build

• pom.xml: set system property BIGQUERY_JDBC_TELEMETRY_ENABLED=false in the failsafe
  configuration so integration tests do not emit usage telemetry. Test-only; does not affect the
  published artifact or end users.

Tests

• Add count-level assertions via mockStatic(TelemetryManager) for each fix above. Existing
  telemetry tests only asserted TelemetryManager.isInitialized(), which is why none of these
  were caught.
• BigQueryDriverTest: introduce VALID_TOKEN_URL and reuse it in the four tests that inlined
  the same URL; cover the IOException path by stubbing BigQueryJdbcRootLogger.setLevel.
• BigQueryStatementTest: add assertFeatureRecorded(action, feature, expectedCount) helper.
• BigQueryPooledConnectionTest: assert the wrapper delegates and records nothing itself.