LouvainMapEquation occasionally fails

[fabratu]

On CI (macOS) LouvainMapEquation fails occasionally:

1: [ RUN      ] MapEquationGTest.testLocalMove
1: /Users/runner/work/networkit/networkit/networkit/cpp/community/test/LouvainMapEquationGTest.cpp:59: Failure
1: Expected equality of these values:
1:   partition.getSubsets()
1:     Which is: { { 0, 4, 6, 19, 21, 25, 26, 29, 32, 34, 43, 45, 49, 50, 52, 58, 65, 67, 75, 79, 90, 95, 98 }, { 1, 7, 11, 12, 14, 15, 16, 17, 18, 20, 22, 23, 24, 33, 36, 37, 39, 40, 41, 42, 44, 46, 47, 48, 56, 57, 61, 62, 64, 66, 69, 70, ... }, { 2, 3, 5, 8, 9, 10, 13, 27, 28, 30, 31, 35, 38, 51, 53, 54, 55, 59, 60, 63, 68, 73, 74, 76, 82, 96 } }
1:   groundTruth.getSubsets()
1:     Which is: { { 0, 4, 6, 19, 21, 25, 26, 29, 32, 34, 43, 45, 49, 50, 52, 58, 65, 67, 75, 79, 90, 95, 98 }, { 1, 12, 14, 15, 16, 22, 23, 24, 33, 36, 37, 40, 41, 44, 47, 48, 56, 62, 64, 66, 70, 71, 77, 78, 80, 83, 87, 88, 92 }, { 2, 3, 5, 8, 9, 10, 13, 27, 28, 30, 31, 35, 38, 51, 53, 54, 55, 59, 60, 63, 68, 73, 74, 76, 82, 96 }, { 7, 11, 17, 18, 20, 39, 42, 46, 57, 61, 69, 72, 81, 84, 85, 86, 89, 91, 93, 94, 97, 99 } }