feat: do not show modal message if screen changes and page rule mismatches

[mrehan27]

part of MBL-353

Changes

• Whenever current route is updated, cancel any message being displayed if it has page rules that don’t match the new route
• Added onMessageCancelled callback internally to differentiate between cancelled and other message states
• Prevented loading views once message cancellation request is received
• Updated GistSdk and related views to support writing tests
• Minor code refactoring to facilitate writing tests

Note

Tests are added in #357

[github-actions[bot]]

# Sample app builds 📱 Below you will find the list of the latest versions of the sample apps. It's recommended to always download the latest builds of the sample apps to accurately test the pull request. --- * java_layout: `rehan/mbl-353-in-app-fix (1718394486)` * kotlin_compose: `rehan/mbl-353-in-app-fix (1718394490)`

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 5.55556% with 85 lines in your changes missing coverage. Please review.

Project coverage is 52.86%. Comparing base (d9388a3) to head (8469c61).

Files	Patch %	Lines
...stomer/messaginginapp/gist/presentation/GistSdk.kt	8.10%	34 Missing :warning:
...saginginapp/gist/presentation/GistModalActivity.kt	0.00%	16 Missing :warning:
...stomer/messaginginapp/gist/data/listeners/Queue.kt	18.18%	9 Missing :warning:
...inginapp/gist/presentation/engine/EngineWebView.kt	0.00%	9 Missing :warning:
...ssaginginapp/gist/presentation/GistModalManager.kt	0.00%	8 Missing :warning:
...gist/presentation/engine/EngineWebViewInterface.kt	0.00%	7 Missing :warning:
...tomer/messaginginapp/gist/presentation/GistView.kt	0.00%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #355 +/- ## ============================================ - Coverage 54.32% 52.86% -1.46% Complexity 282 282 ============================================ Files 109 109 Lines 2511 2582 +71 Branches 355 366 +11 ============================================ + Hits 1364 1365 +1 - Misses 1025 1095 +70 Partials 122 122 ```

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[github-actions[bot]]

Build available to test Version: rehan-mbl-353-in-app-fix-SNAPSHOT Repository: https://s01.oss.sonatype.org/content/repositories/snapshots/

[github-actions[bot]]

📏 SDK Binary Size Comparison Report

No changes detected in SDK binary size ✅

[levibostian]

Code LGTM.

I suggest that before merging, check this test case I wrote and make sure it passes with this implementation.

[mrehan27]

PR is updated and ready for review.