[notification-hubs] Fix FCM notification

[mpodwysocki]

Packages impacted by this PR

• @azure/notification-hubs

Issues associated with this PR

• [NotificationHubs] v1.1.0 introduced fcmV1 support, but sendNotification don't accept it as a parameter #28936

Describe the problem that is addressed by this PR

Fixes to expand the API to include the FCM V1 Message type as part of the Notification type.

What are the possible designs available to address the problem? If there are more than one possible design, why was the one in this PR chosen?

Are there test cases added in this PR? (If not, why?)

Provide a list of related PRs (if any)

Command used to generate this PR:**(Applicable only to SDK release request PRs)

Checklists

• Added impacted package name to the issue description
• Does this PR needs any fixes in the SDK Generator?** (If so, create an Issue in the Autorest/typescript repository and link it here)
• Added a changelog (if necessary)

[azure-sdk]

API change check

APIView has identified API level changes in this PR and created following API reviews.

@azure/notification-hubs