fix: Use default integration case timeout for TestBinlogImport

[congqixia]

See also #32700

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.75%. Comparing base (29d3c57) to head (2e16f69).
Report is 9 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #32701      +/-   ##
==========================================
- Coverage   81.79%   81.75%   -0.04%     
==========================================
  Files         998      998              
  Lines      124188   124207      +19     
==========================================
- Hits       101576   101549      -27     
- Misses      18762    18793      +31     
- Partials     3850     3865      +15     

Files	Coverage Δ
tests/integration/minicluster_v2.go	72.51% <ø> (+0.54%)	⬆️

... and 39 files with indirect coverage changes

[tedxu]

/lgtm