feat: IAMs now display when triggers added before first fetch

[nan-li]

Description

One Line Summary

Display IAMs with triggers added before first fetch on cold start.

Details

On subsequent cold starts, if triggers were added very early in the app lifecycle (before the first IAM fetch completed), in-app messages matching those triggers would not display even though they should have been eligible for redisplay.

Motivation

Product request

Scope

This only affects cold starts (process restarts) and does not impact warm starts from backgrounding, where existing redisplay behavior is preserved.

Testing

Unit testing

Need to add

Manual testing

Tested on API 35 emulator.
Add trigger immediately after initialization, and confirm the IAM now displays after the changes in this PR.
Tested with pausing and unpausing.

Affected code checklist

• Notifications
  • Display
  • Open
  • Push Processing
  • Confirm Deliveries
• Outcomes
• Sessions
• In-App Messaging
• REST API requests
• Public API changes

Checklist

Overview

• I have filled out all REQUIRED sections above
• PR does one thing
  • If it is hard to explain how any codes changes are related to each other then it most likely needs to be more than one PR
• Any Public API changes are explained in the PR details and conform to existing APIs

Testing

• I have included test coverage for these changes, or explained why they are not needed
• All automated tests pass, or I explained why that is not possible
• I have personally tested this on my device, or explained why that is not possible

Final pass

• Code is as readable as possible.
  • Simplify with less code, followed by splitting up code into well named functions and variables, followed by adding comments to the code.
• I have reviewed this PR myself, ensuring it meets each checklist item
  • WIP (Work In Progress) is ok, but explain what is still in progress and what you would like feedback on. Start the PR title with "WIP" to indicate this.

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This change is 

[github-actions]

📊 Diff Coverage Report

Diff Coverage Report (Changed Lines Only)

Threshold: 80%

Changed Files Coverage

• ✅ InAppMessagesManager.kt: 27/27 changed lines (100.0%) (47 changed lines)

Overall Coverage (Changed Lines Only)

27/27 changed lines covered (100.0%)

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[abdulraqeeb33]

LGTM