createEntities was introduced in 4192095 for PHPLIB-1392; however, other syntax from schema version 1.9 remains unimplemented.

Add support for the following:

• createOptions for initialData
• $$lte matching operator

The timeoutMS field in collectionOrDatabaseOptions and isTimeoutError field for expectedError can remain unimplemented pending the CSOT implementation. Consider adding logic to handle these options and raise an exception to mark the test incomplete, rather than relying on a note in the doc block for UnifiedTestRunner::MAX_SCHEMA_VERSION and exceptions raised for unsupported options/operations.