TST accelerate runtime for test svm/tests/test_svm.py::test_svc_ovr_tie_breaking[NuSVC] (#21443)
TST accelerate runtime for test svm/tests/test_svm.py::test_svc_ovr_tie_breaking[NuSVC] (#21443)

* runtime test optimization for test svm

* Grant co-authorship to @mohaseeb

Co-authored-by: Mohamed Haseeb <6b0d31c0d563223024da45691584643ac78c96e8@mohaseeb.com>

* introduced RBF kernel to optimize on tests

* reformatted code

Co-authored-by: Olivier Grisel <2debdaedc015a28b6d296a878ea9501beb58cbd4@ensta.org>
Co-authored-by: Mohamed Haseeb <6b0d31c0d563223024da45691584643ac78c96e8@mohaseeb.com>
Co-authored-by: Eric Ndirangu Mwangi <64fff38cc7b5c82338b0098e109e3105a1c10658@safaricom.co.ke>
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