Fix #1038 BlockActionPayload is missing app_unfurl information

[seratch]

This pull request resolves #1038

Category (place an x in each of the [ ])

• bolt (Bolt for Java)
• bolt-{sub modules} (Bolt for Java - optional modules)
• slack-api-client (Slack API Clients)
• slack-api-model (Slack API Data Models)
• slack-api-*-kotlin-extension (Kotlin Extensions for Slack API Clients)
• slack-app-backend (The primitive layer of Bolt for Java)

Requirements

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[codecov]

Codecov Report

Merging #1039 (42bff8d) into main (e9c1114) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##               main    #1039      +/-   ##
============================================
- Coverage     76.79%   76.79%   -0.01%     
+ Complexity     3707     3706       -1     
============================================
  Files           406      406              
  Lines         11159    11159              
  Branches       1112     1112              
============================================
- Hits           8570     8569       -1     
  Misses         1920     1920              
- Partials        669      670       +1     

Impacted Files	Coverage Δ
...imits/metrics/impl/BaseMemoryMetricsDatastore.java	79.65% <0.00%> (-0.44%)	⬇️
...va/com/slack/api/socket_mode/SocketModeClient.java	64.33% <0.00%> (ø)

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