Removing boxed types for nregion property check

[mbhaskar]

Description

Removing boxedtypes while checking for nregion property on database account. This was earlier defaulted to false anyway, so null is now considered as false.

Fixes: #48630

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 removes nullable boxed Boolean usage for the “N region synchronous commit enabled” flag in Cosmos DB internal request/account state, standardizing missing/unknown values to false to avoid null propagation.

Changes:

• Changed GlobalEndpointManager#getNRegionSynchronousCommitEnabled to return primitive boolean and default to false when latestDatabaseAccount is unset.
• Changed DocumentServiceRequestContext#setNRegionSynchronousCommitEnabled to accept primitive boolean.
• Changed DatabaseAccount#isNRegionSynchronousCommitEnabled to return primitive boolean and default to false when the property is absent.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
sdk/cosmos/azure-cosmos/src/main/java/com/azure/cosmos/implementation/GlobalEndpointManager.java	Eliminates nullable return for n-region sync commit flag; defaults missing account state to false.
sdk/cosmos/azure-cosmos/src/main/java/com/azure/cosmos/implementation/DocumentServiceRequestContext.java	Removes boxed type in setter to prevent null/unboxing issues and standardize boolean flow.
sdk/cosmos/azure-cosmos/src/main/java/com/azure/cosmos/implementation/DatabaseAccount.java	Removes nullable return for account capability check; defaults absent property to false.

[jeet1995]

CHANGELOG?

[mbhaskar]

/azp run java - cosmos

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[xinlian12]

LGTM, thanks