DataStore multi-auth is not working with mixed owner and public auth rules

[HuiSF]

Describe the bug

Original issue report aws-amplify/amplify-flutter#2527 | aws-amplify/amplify-flutter#1693
Related amplify-android issue: aws-amplify/amplify-android#2399

DataStore multi-auth is not working as expected.

Take schema

type UserProfile @model @auth(rules: [{ allow: owner }]) {
  id: ID!
  name: String!
}

type ModelA @model @auth(rules: [{ allow: public, provider: apiKey }]) {
  id: ID!
  content: String
}

type ModelB
  @model
  @auth(
    rules: [
      { allow: public, provider: apiKey, operations: [read] }
      { allow: owner }
    ]
  ) {
  id: ID!
  content: String
}

type ModelC
  @model
  @auth(
    rules: [
      { allow: public, provider: apiKey, operations: [read] }
      { allow: private, provider: userPools }
    ]
  ) {
  id: ID!
  content: String
}

When configure DataStore to use multi-auth mode with NO authenticated session:

Expected Behavior

As a developer, I want my end users to have read access to Model A B and C, including receiving subscription events.

models	sync queries	subscriptions
UserProfile	No	No
ModelA	Yes	Yes
ModelB	Yes	Yes
ModelC	Yes	Yes

Actual Behavior

models	sync queries	subscriptions
UserProfile	No	No
ModelA	Yes	Yes
ModelB	Yes	No
ModelC	Yes	No

What happened: amplify-swift attempted to establish subscriptions for ModelB and ModelC using user credentials, after failure, it doesn’t attempt to establish subscriptions with API key. So the App cannot receive any update of ModelB and ModelC while the public read is allowed on these two models.

This issue is reproducible in v1, I believe it exists in v2 as well.

Steps To Reproduce

Steps to reproduce the behavior:
1. Use above schema example to setup datastore + API sync + auth (default Cognito User Pool + API key as additional auth mode)
2. Start DataStore without signing a user and watch the sync behavior
3. Sign in a user, start DataStore and watch the sync behavior

Expected behavior

See above.

Amplify Framework Version

1.29.2

Amplify Categories

DataStore

Dependency manager

Cocoapods

Swift version

5

CLI version

The latest

Xcode version

The latest

Relevant log output

<details>
<summary>Log Messages</summary>


INSERT LOG MESSAGES HERE

```

Is this a regression?

No

Regression additional context

No response

Device

iPhone 14 simulators

iOS Version

iOS 16

Specific to simulators

No response

Additional context

No response

[royjit]

Datastore plugin was not creating subscription for onCreate, onUpdate or onDelete for read rule. Created this PR to handle read during subscription - #3029

[royjit]

Fix is released in v1, next step to verify the behavior in v2.

[askemottelson]

Any plans for fixing this issue for v2?

[lawmicha]

Next steps, this PR #3029 should be cherry-picked to main for V2.

[thisisabhash]

This is released in Amplify Swift v2.21.5.