Fix max search-window when paging

[t2gran]

Summary

The PagingService was initialized with the dynamic max-search-window value, and not the request max search-window. This commit also updates the Transmodel API doc.

Issue

This was reported at Entur yesterday. It is a minor fix, so I have not created an issue for it.

Unit tests

This was an error in the wiring of the application - creating a good test for this is expensive and give little value.

Documentation

✅ The Transmodel API doc is updated.
✅ JavaDoc and code comments is updated/added
🟥 The GTFS API is not updated - someone who knows the API should do this

Changelog

✅

Bumping the serialization version id

Not needed.

[codecov]

Codecov Report

Attention: Patch coverage is 71.42857% with 6 lines in your changes missing coverage. Please review.

Project coverage is 69.90%. Comparing base (cee960f) to head (4d3fff1).
Report is 32 commits behind head on dev-2.x.

Files with missing lines	Patch %	Lines
...opentripplanner/apis/transmodel/TransmodelAPI.java	0.00%	3 Missing ⚠️
...ner/standalone/configure/ConstructApplication.java	0.00%	2 Missing ⚠️
...standalone/server/DefaultServerRequestContext.java	75.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             dev-2.x    #6189   +/-   ##
==========================================
  Coverage      69.90%   69.90%           
+ Complexity     17723    17722    -1     
==========================================
  Files           1998     1998           
  Lines          75443    75453   +10     
  Branches        7718     7718           
==========================================
+ Hits           52740    52748    +8     
- Misses         20025    20026    +1     
- Partials        2678     2679    +1     

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