feature(integration): support social cards for blog plugin posts

[Guts]

This PR improves the Material Social Cards plugin integration by adding support for social cards generated for Material Blog plugin posts (https://squidfunk.github.io/mkdocs-material/plugins/blog/).

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

Attention: Patch coverage is 54.54545% with 15 lines in your changes missing coverage. Please review.

Project coverage is 79.57%. Comparing base (4179aaf) to head (8bb75c5).
Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
...lugin/integrations/theme_material_social_plugin.py	54.54%	11 Missing and 4 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #326      +/-   ##
==========================================
- Coverage   80.72%   79.57%   -1.15%     
==========================================
  Files           9        9              
  Lines         638      666      +28     
  Branches      111      117       +6     
==========================================
+ Hits          515      530      +15     
- Misses         85       94       +9     
- Partials       38       42       +4     

Flag	Coverage Δ
unittests	79.57% <54.54%> (-1.15%)	⬇️

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Files with missing lines	Coverage Δ
...lugin/integrations/theme_material_social_plugin.py	72.36% <54.54%> (-4.25%)	⬇️