Fix full text policy test assertions to accommodate backend V2 read behavior

[aayush3011]

Description

The full text policy tests were failing due to a backend change in how the full text policy is returned on reads. The backend now implements V2 of the full text policy while still accepting V1 for backward compatibility. However, the policy returned in the read response is no longer identical to what was sent during container creation.

The backend's updated read behavior now populates both defaultLanguage and defaultSpec fields:

1. If both defaultLanguage and defaultSpec are set: returned as-is.
2. If both defaultLanguage and defaultSpec are missing: returned as-is.
3. If defaultLanguage is missing but defaultSpec is present: defaultLanguage is set to defaultSpec.language.
4. If defaultLanguage is present but defaultSpec is missing: defaultSpec.language is set to defaultLanguage.

Because the response may contain additional fields not present in the original request, tests now assert on individual fields (defaultLanguage, fullTextPaths) rather than comparing the entire policy object.

Full support for the V2 full text policy with defaultSpec will follow in a separate PR, as the backend is still finalizing additional V2 functionality.

All SDK Contribution checklist:

• The pull request does not introduce [breaking changes]
• CHANGELOG is updated for new features, bug fixes or other significant changes.
• I have read the contribution guidelines.

General Guidelines and Best Practices

• Title of the pull request is clear and informative.
• There are a small number of commits, each of which have an informative message. This means that previously merged commits do not appear in the history of the PR. For more information on cleaning up the commits in your PR, see this page.

Testing Guidelines

• Pull request includes test coverage for the included changes.

[Copilot]

Pull request overview

This PR updates full text policy test assertions in the Cosmos SDK to accommodate a backend V2 change in how full text policies are returned on reads. Instead of comparing the entire policy object (which now may contain additional fields like defaultSpec), tests now assert on individual known fields (defaultLanguage, fullTextPaths).

Changes:

• Updated assertions in sync and async full text policy tests to compare individual fields rather than entire policy objects.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
sdk/cosmos/azure-cosmos/tests/test_full_text_policy.py	Updated sync test assertions to check defaultLanguage and fullTextPaths individually
sdk/cosmos/azure-cosmos/tests/test_full_text_policy_async.py	Updated async test assertions to check defaultLanguage and fullTextPaths individually

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[simorenoh]

/azp run python - cosmos - tests

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