Add OGGraphGetWeakValue

[Kyle-Ye]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 7 lines in your changes missing coverage. Please review.

Project coverage is 22.18%. Comparing base (f459df4) to head (901301d).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...urces/OpenGraph/Attribute/Weak/WeakAttribute.swift	0.00%	5 Missing ⚠️
...ources/OpenGraph_SPI/Attribute/OGWeakAttribute.cpp	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #87      +/-   ##
==========================================
- Coverage   22.21%   22.18%   -0.03%     
==========================================
  Files          51       51              
  Lines        1274     1280       +6     
==========================================
+ Hits          283      284       +1     
- Misses        991      996       +5     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.