fix: Conversation details of archived conversation still show 'Archive' option

[arjita-mitra]

Description

Conversation details of an archived conversation still show 'Archive' option. When a conversation is archived, the conversation details should show unarchive option. If user tries to unarchive a conversation then first we should unarchive the conversation then check if that was the last archived conversation if yes we need to switch the view to conversation list otherwise stay in the archived view.

Screenshots/Screencast (for UI changes)

Checklist

• PR has been self reviewed by the author;
• Hard-to-understand areas of the code have been commented;
• If it is a core feature, unit tests have been added;

Important details for the reviewers

(Delete this section if unnecessary)

• Need to update the unarchived icon.

[codecov]

Codecov Report

Merging #16128 (5cbeb97) into dev (a929ff6) will decrease coverage by 0.02%.
Report is 2 commits behind head on dev.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##              dev   #16128      +/-   ##
==========================================
- Coverage   44.54%   44.52%   -0.02%     
==========================================
  Files         708      708              
  Lines       23151    23160       +9     
  Branches     5259     5261       +2     
==========================================
  Hits        10313    10313              
- Misses      11498    11507       +9     
  Partials     1340     1340