MAT-6467 Add Location Type missing entity to AnyEntity instanceof check condition

[adongare]

When we added the Location Entity model to cqm-models as part of QDM 5.6 spec, we missed a condition to check instanceof Location when we typecast the entity object. This PR adds the instanceof check on Location so that we can avoid recasting, instead just return same instance.

Pull requests into cqm-models require the following. Submitter and reviewer should ✅ when done. For items that are not-applicable, note it's not-applicable ("N/A") and ✅.

Submitter:

• This pull request describes why these changes were made.
• Internal ticket for this PR: MAT-6467 Add Location Type to AnyEntity in CQM-Models
• Internal ticket links to this PR
• Code diff has been done and been reviewed
• Tests are included and test edge cases
• Tests have been run locally and pass
• If applicable, the library version number in package.json and cqm-models.gemspec has been updated
• Cqm-execution fixtures have been updated with the update_cqm_execution_fixtures.sh script inside server-scripts using this branch in the cqm-converter

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• Code is maintainable and reusable, reuses existing code and infrastructure where appropriate, and accomplishes the task’s purpose
• The tests appropriately test the new code, including edge cases
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