Tests are failing on CI for new test rtree_with_strategies.cpp

[vissarion]

Tests are currently failing on CI for the index test https://github.com/boostorg/geometry/blob/develop/index/test/rtree/rtree_with_strategies.cpp

This is due to long compilation times and/or memory consumption.

Locally, with g++-9 it took 176.39 seconds and ~8.2 GB to compile that test. Similar results with few other versions of clang and g++ so it does not seem as a compiler version issue.

To fix this we can decrease the number of cases tested, split them into files or create separate compilation units in Jamfile. @awulkiew any other ideas?

Interestingly, there are no issues building the same test with cmake on github actions see https://github.com/boostorg/geometry/actions/runs/12876224865/job/35898875915#step:9:125