Use 3 macrocycles of refinement by default in dials.ssx_integrate

[jbeilstenedmands]

At least a couple more macrocycles should be the default, so that the improved predictions from the first round of refinement can be used when calculating the reflection properties for subsequent refinement.

This makes the program have a higher runtime, but I have some WIP performance improvements that more than compensate.

[codecov]

Codecov Report

Merging #2352 (41cb27b) into main (e063d4a) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

❗ Current head 41cb27b differs from pull request most recent head 62aee42. Consider uploading reports for the commit 62aee42 to get more accurate results

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- Coverage   83.11%   83.10%   -0.01%     
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  Files         593      593              
  Lines       68542    68542              
  Branches     9213     9213              
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- Hits        56967    56962       -5     
- Misses       9447     9449       +2     
- Partials     2128     2131       +3