recover from population size 1

[maypink]

fixes minor issues #1011 and #1008

[maypink]

не уверена насчет этого. с одной стороны, если долго будет улучшение только по одному параметру, то вероятность осесть в локальном максимуме увеличивается, с другой -- ну рано или поздно next() таки задействуется

[codecov]

Codecov Report

Merging #1012 (3bdc5f7) into master (c5f050d) will decrease coverage by 0.07%.
The diff coverage is 100.00%.

❗ Current head 3bdc5f7 differs from pull request most recent head b9cbcd3. Consider uploading reports for the commit b9cbcd3 to get more accurate results

@@            Coverage Diff             @@
##           master    #1012      +/-   ##
==========================================
- Coverage   87.86%   87.78%   -0.08%     
==========================================
  Files         206      206              
  Lines       13786    13685     -101     
==========================================
- Hits        12113    12014      -99     
+ Misses       1673     1671       -2     

Impacted Files	Coverage Δ
fedot/core/composer/metrics.py	97.20% <100.00%> (-0.05%)	⬇️
...e/optimisers/gp_comp/parameters/population_size.py	98.30% <100.00%> (+3.56%)	⬆️
...edot/core/repository/graph_operation_repository.py	66.66% <0.00%> (-8.34%)	⬇️
fedot/explainability/explainer_template.py	75.00% <0.00%> (-5.00%)	⬇️
...ore/optimisers/gp_comp/parameters/mutation_prob.py	92.00% <0.00%> (-4.00%)	⬇️
...implementations/data_operations/sklearn_filters.py	94.49% <0.00%> (-1.84%)	⬇️
fedot/core/repository/tasks.py	72.72% <0.00%> (-1.56%)	⬇️
fedot/core/caching/base_cache.py	66.66% <0.00%> (-1.52%)	⬇️
...core/optimisers/opt_history_objects/opt_history.py	76.97% <0.00%> (-1.26%)	⬇️
fedot/core/data/multi_modal.py	84.37% <0.00%> (-1.21%)	⬇️
... and 55 more

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