[sitecore-jss][sitecore-jss-react] Enhance withDatasourceCheck() to support dataSourceResolveFailed

[sc-naveenhedallaarachchi]

• This PR follows the Contribution Guide
• Changelog updated
• Upgrade guide entry added

Description / Motivation

• Add optional dataSourceResolveFailed to ComponentRendering.
• Treat dataSourceResolveFailed: true the same as a missing datasource in withDatasourceCheck() (hide in normal mode, editing error in editing mode).
• Preserve existing behavior when the property is false or omitted so older Layout Service versions keep working.
• Document the automatic handling in the withDatasourceCheck() JSDoc example.

Testing Details

• Unit Test Added
• Manual Test/Other (Please elaborate)
• Confirm dataSourceResolveFailed: false still renders the wrapped component.
• Confirm dataSourceResolveFailed: true hides the component in normal mode and shows the editing error in editing mode.
• Confirm omitted property (older Layout Service) still uses the original presence check.
• Confirm nested placeholder renderings are evaluated independently.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

[art-alexeyenko]

Looks good - but please double check whether SXP 10.5 will provide the isContentResolved field in layout data. If not - there's no usecase for this PR.