Bug: read replica service returns incorrect password

[chayac]

When I create a read replica, Terraform returns a password for tsdbadmin but that password is incorrect because the read replica actually uses the primary instance's password.

Example code for repro (using CDKTF):

import { Construct } from "constructs";
import { App, TerraformStack } from "cdktf";
import { TimescaleProvider } from "./.gen/providers/timescale/provider";
import { Service } from "./.gen/providers/timescale/service";

class MyStack extends TerraformStack {
  constructor(scope: Construct, id: string) {
    super(scope, id);

    new TimescaleProvider(this, "timescale", {
      accessKey: "api-key",
      projectId: "project-id",
      secretKey: "api-secret",
    });

    const timescaleService = new Service(this, "timescaledb", {});

    const timescaleReadReplicaService = new Service(
      this,
      "timescaledbReadReplica",
      { readReplicaSource: timescaleService.id }
    );

    console.log(timescaleService.password);
    console.log(timescaleReadReplicaService.password)
  }
}

const app = new App();
new MyStack(app, "test-cdktf");
app.synth();

Expected behavior: timescaleReadReplicaService.password === timescaleService.password

Actual behavior: timescaleReadReplicaService.password is different and authentication fails when using that password to log in to the read replica