Tune the amount of groups in `__parallel_find_or` pattern #10006

Job	Run time
documentation	18s
clang-format	12s
codespell	16s
PSTL offload cpu,bknd=dpcpp,cmplr=icpx,ubuntu-latest,std=с++17,cfg=release	53s
HOST,bknd=omp,cmplr=clang++,macos-latest,std=c++17,cfg=release	4m 9s
CPU,bknd=dpcpp,cmplr=icpx,ubuntu-latest,std=с++17,cfg=release	40s
PSTL offload cpu,bknd=dpcpp,cmplr=icx-cl,windows-latest,std=c++17,cfg=release	52s
FPGA_EMU,bknd=dpcpp,cmplr=icpx,ubuntu-latest,std=с++17,cfg=release	49s
HOST,bknd=tbb,cmplr=icx-cl,windows-latest,std=c++17,cfg=release	50s
HOST,bknd=tbb,cmplr=icpx,ubuntu-latest,std=с++17,cfg=release	1s
HOST,bknd=omp,cmplr=icpx,ubuntu-latest,std=с++17,cfg=release	42s
HOST,bknd=tbb,cmplr=cl,windows-latest,std=c++17,cfg=release	51s
HOST,bknd=omp,cmplr=g++,ubuntu-latest,std=с++17,cfg=release	44s
CPU,bknd=dpcpp,cmplr=icx,windows-latest,std=c++17,cfg=release	50s
HOST,bknd=tbb,cmplr=g++,ubuntu-latest,std=с++17,cfg=release	53s
HOST,bknd=tbb,cmplr=g++,ubuntu-latest,std=с++17,cfg=release	55s
HOST,bknd=tbb,cmplr=clang++,ubuntu-latest,std=с++17,cfg=release	1s
HOST,bknd=omp,cmplr=clang++,ubuntu-latest,std=с++17,cfg=release	55s
HOST,bknd=tbb,cmplr=clang++,ubuntu-latest,std=с++17,cfg=release	53s
HOST,bknd=tbb,cmplr=icpx,ubuntu-latest,std=с++17,cfg=release	9s
HOST,bknd=serial,cmplr=g++,ubuntu-latest,std=с++17,cfg=release	52s
	16m 45s

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