fix: active frac hanging if no disk space is left for some time

[cheb0]

Description

---

• I have read and followed all requirements in CONTRIBUTING.md;
• I used LLM/AI assistance to make this pull request;

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 71.07%. Comparing base (6372ee9) to head (931c3e6).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
frac/active.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #475      +/-   ##
==========================================
- Coverage   71.12%   71.07%   -0.05%     
==========================================
  Files         232      232              
  Lines       18404    18405       +1     
==========================================
- Hits        13089    13082       -7     
- Misses       4337     4342       +5     
- Partials      978      981       +3     

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[github-actions]

🔴 Performance Degradation

Some benchmarks have degraded compared to the previous run.
Click on Show table button to see full list of degraded benchmarks.

Show table

Name	Previous	Current	Ratio	Verdict
MutexListAppend-4	e1ed05	09ca8b
	184.95 MB/s	165.09 MB/s	0.89	🔴
	86631513.00 ns/op	96916619.00 ns/op	1.12	🔴