fix: allow more runtime errors in find_batch_size()

[qin-yu]

This PR attempts to fix #358.

1. find_batch_size() now catches and handles all runtime errors during probing.
2. A specific issue, where VRAM is sufficient but the layer can only support INT_MAX elements, is tested.

[codecov]

Codecov Report

Attention: Patch coverage is 42.85714% with 8 lines in your changes missing coverage. Please review.

Project coverage is 64.89%. Comparing base (36e9445) to head (4fcd3f7).
Report is 5 commits behind head on master.

Files with missing lines	Patch %	Lines
...antseg/functionals/prediction/utils/size_finder.py	0.00%	4 Missing ⚠️
tests/functionals/prediction/test_size_finder.py	60.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #359      +/-   ##
==========================================
- Coverage   64.94%   64.89%   -0.05%     
==========================================
  Files          71       71              
  Lines        5177     5187      +10     
==========================================
+ Hits         3362     3366       +4     
- Misses       1815     1821       +6     

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