[MOB-6490] toggle off impression tracking if no embedded messages

[evantk91]

🔹 Jira Ticket(s) if any

• MOB-6490
• MOB-6610
• MOB-6605

✏️ Description

This pull request includes the following:

• toggles off impression tracking call if there are no impressions to track
• updates message updated callback to align with iOS SDK
• updates naming of several items to align with iOS SDK
• renames getEmbeddedMessages to getMessages to align with iOS SDK

[Ayyanchira]

Added some comments

[Ayyanchira]

LGTM

[codecov]

Codecov Report

Patch coverage: 11.07% and project coverage change: -22.75% ⚠️

Comparison is base (f844696) 62.92% compared to head (49841be) 40.17%.
Report is 6 commits behind head on embedded.

❗ Current head 49841be differs from pull request most recent head 3bd2f12. Consider uploading reports for the commit 3bd2f12 to get more accurate results

Additional details and impacted files

@@              Coverage Diff              @@
##           embedded     #601       +/-   ##
=============================================
- Coverage     62.92%   40.17%   -22.75%     
=============================================
  Files            68       72        +4     
  Lines          4070     4398      +328     
  Branches        469      495       +26     
=============================================
- Hits           2561     1767      -794     
- Misses         1257     2427     +1170     
+ Partials        252      204       -48     

Files Changed	Coverage Δ
...com/iterable/iterableapi/EmbeddedImpressionData.kt	0.00% <0.00%> (ø)
...va/com/iterable/iterableapi/IterableConstants.java	0.00% <ø> (ø)
.../iterable/iterableapi/IterableEmbeddedPlacement.kt	0.00% <0.00%> (ø)
.../iterable/iterableapi/OfflineRequestProcessor.java	0.00% <0.00%> (-81.04%)	⬇️
...ain/java/com/iterable/iterableapi/IterableApi.java	33.92% <9.52%> (-27.45%)	⬇️
...om/iterable/iterableapi/IterableEmbeddedManager.kt	10.97% <10.97%> (ø)
...com/iterable/iterableapi/EmbeddedSessionManager.kt	12.69% <12.69%> (ø)
...va/com/iterable/iterableapi/IterableApiClient.java	39.40% <16.90%> (-36.66%)	⬇️
...om/iterable/iterableapi/IterableEmbeddedSession.kt	25.00% <25.00%> (ø)
...m/iterable/iterableapi/OnlineRequestProcessor.java	87.50% <100.00%> (+2.88%)	⬆️

... and 31 files with indirect coverage changes

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