Describe the bug

The DatabaseCluster.instanceEndpoints only returns the reader endpoints but not the writer endpoints, while DatabaseCluster.instanceIdentifiers returns identifiers for both.

Expected Behavior

According to the documentation I would expect both endpoints return the information for all instances:

i.e. DatabaseCluster.instanceEndpoints should return writer and reader endpoints.

Current Behavior

DatabaseCluster.instanceEndpoints only returns the reader endpoints but not the writer endpoints

Reproduction Steps

const clusterProps:DatabaseClusterProps = {
     …,
     writer: ClusterInstance.serverlessV2('writer'),
     readers: [ClusterInstance.serverlessV2('reader')],
     …
};

databaseCluster = new DatabaseCluster(
    this,
   `${id}`,
     {
       ...clusterProps,
        credentials: Credentials.fromSecret(secret),
     },
);

databaseCluster.instanceEndpoints

Possible Solution

the writer endpoint should be added to instanceEndpoints here:

Additional Information/Context

No response

CDK CLI Version

2.130.0

Framework Version

No response

Node.js Version

v18.17.1

OS

Mac

Language

TypeScript

Language Version

No response

Other information

No response