fix: 7373 - Initialize counters on app bar statistics card load

[maxweilun1989]

Ensure statistics counters are loaded when the AppBarStatisticsCard is first created, addressing the issue where counters may not be initialized properly after login.

⚠️ Acceptance Requirements

This Pull Request will only be accepted if:

• ✅ It is linked to an issue (using linking keywords like Fixes, Closes, or Resolves)
• ✅ The linked issue is assigned to the author of this PR

---

What

• Added an initState method to _AppBarStatisticsCardState that calls _asyncLoad() when the widget is first initialized

Screenshot or video

screen-20260205-214535.mp4

Fixes bug(s)

• Fixes: Counters not initialized upon connection #7373

Part of

• 🎯 What can I work on ? (mobile app) #525

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 9.12%. Comparing base (4d9c7fc) to head (a1a29eb).
⚠️ Report is 1367 commits behind head on develop.

Files with missing lines	Patch %	Lines
...d_in/statistics_cards/app_bar_statistics_card.dart	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           develop   #7403      +/-   ##
==========================================
- Coverage     9.54%   9.12%   -0.43%     
==========================================
  Files          325     624     +299     
  Lines        16411   36586   +20175     
==========================================
+ Hits          1567    3337    +1770     
- Misses       14844   33249   +18405     

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[teolemon]

what is this change about ?