DOCS: update html_context with PyAnsys tags

[pyansys-automation]

This PR updates the html_context in doc/source/conf.py with PyAnsys tags.

Tags added: Structures

The update merges tags into existing html_context configuration without affecting other settings.

Changes:

• Merged pyansys_tags to html_context
• Preserved all existing html_context settings

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[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ -0.04% (target: -1.00%)	✅ ∅

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (bb20539)	2619	2254	86.06%
Head commit (6302480)	2619 (+0)	2253 (-1)	86.03% (-0.04%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#1291)	0	0	∅ (not applicable)

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.02%. Comparing base (bb20539) to head (6302480).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1291      +/-   ##
==========================================
- Coverage   86.06%   86.02%   -0.04%     
==========================================
  Files          40       40              
  Lines        2619     2619              
==========================================
- Hits         2254     2253       -1     
- Misses        365      366       +1     

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[github-actions]

The documentation for this pull request will be available at https://mechanical.docs.pyansys.com/pull/1291. Please allow some time for the documentation to be deployed.