[MOB-3588] Add PendingIntent.FLAG_UPDATE_CURRENT to action button intents

[vbabenkoru]

🔹 Jira Ticket(s) if any

• MOB-3588

✏️ Description

Without it, if the hashCodes matches a button from one of the previous notifications, the pending intent won't be updated, and it may perform an action from the old message.

The root of the issue is that we generate PendingIntents with a requestCode that is not guaranteed to be unique per message. As a result, if requestCode collides with a pendingIntent created by an older message (potentially from another template entirely), it will reuse the PendingIntent from the old notification. Adding PendingIntent.FLAG_UPDATE_CURRENT should make it update the PendingIntent if requestCodes collide.

[codecov]

Codecov Report

Merging #390 (56e3af7) into master (7775b92) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #390   +/-   ##
=======================================
  Coverage   67.53%   67.53%           
=======================================
  Files          61       61           
  Lines        3782     3782           
  Branches      440      440           
=======================================
  Hits         2554     2554           
  Misses        966      966           
  Partials      262      262           

Impacted Files	Coverage Δ
...rable/iterableapi/IterableNotificationBuilder.java	81.25% <ø> (ø)

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