Remove flakiness and re-enable test 06 (tests/06_creating_dsl.js)

[BentleyJOakes]

Test 06 (tests/06_creating_dsl.js) was temporarily skipped due to flakiness:

• The test is currently disabled with @disabled: true
• It covers creating DSL elements, setting class attributes, building associations, and model validation.

Task:

• Investigate and resolve the sources of flakiness affecting this test.
• Re-enable test 06 by removing the @disabled flag in the test file.
• Ensure the test passes reliably on local and CI runs.

Relevant code snippets:
tests/06_creating_dsl.js

// TODO: temporarily disable this test for CI and local runs; re-enable after fixing flakiness
module.exports = {
    '@disabled': true,
    ...
}

Example involved in test operations:

• Class and attribute creation
• Model validation
• Association/inheritance creation

Please review Nightwatch configuration and test utilities for potential timing or environment causes.

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Labels: Test/CI/CD, bug
Issue type: Bug