Add mirror fallback support to RAID10 when missing disks

[Schamper]

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[codecov]

Codecov Report

Attention: Patch coverage is 64.28571% with 10 lines in your changes are missing coverage. Please review.

Project coverage is 72.29%. Comparing base (a4609c6) to head (67ecff6).

❗ Current head 67ecff6 differs from pull request most recent head 71d5ed2. Consider uploading reports for the commit 71d5ed2 to get more accurate results

Files	Patch %	Lines
dissect/volume/raid/stream.py	64.28%	10 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #25      +/-   ##
==========================================
- Coverage   72.42%   72.29%   -0.13%     
==========================================
  Files          26       26              
  Lines        1969     1996      +27     
==========================================
+ Hits         1426     1443      +17     
- Misses        543      553      +10     

Flag	Coverage Δ
unittests	72.29% <64.28%> (-0.13%)	⬇️

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