Show optimization strategies firing in the Unnecessary Steps recipe

[spmallette]

The "Unnecessary Steps" section of the anti-patterns recipe correctly teaches the manual rewrites (outE().inV() to out(), and folding a counted adjacency onto its incident edges), and states that TinkerPop performs these rewrites automatically through optimization strategies. However the section gave a reader no way to confirm that claim, never named the strategies involved, and offered no pointer to further reading.

This change addresses that gap:

• Adds a runnable explain() example on the two original (unoptimized) queries so the optimizations are visible in the compiled traversal rather than taken on faith. The block is executed at doc-build time against the modern graph, so the transcript is real output.
• Names the two strategies responsible: IncidentToAdjacentStrategy (which folds outE("created").inV() into a single out("created") step) and AdjacentToIncidentStrategy (which rewrites the counted adjacency back onto the incident edges), and explains how to read the strategy/category columns and the Final Traversal line.
• Cross-references the explain() and profile() steps and the traversal strategies section of the reference documentation.

The change is scoped to docs/src/recipes/anti-patterns.asciidoc (+26 lines). The rendered recipes book was previewed locally to confirm the live explain() transcript renders and the new prose displays cleanly.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.46%. Comparing base (a28cd1f) to head (74193b5).
⚠️ Report is 430 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #3613      +/-   ##
============================================
+ Coverage     76.35%   76.46%   +0.10%     
- Complexity    13424    14294     +870     
============================================
  Files          1012     1036      +24     
  Lines         60341    64620    +4279     
  Branches       7075     7664     +589     
============================================
+ Hits          46076    49409    +3333     
- Misses        11548    12120     +572     
- Partials       2717     3091     +374     

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