fix: disable broken testground integration test

[Stebalien]

See #7186.

[codecov]

Codecov Report

Merging #7187 (b9015f8) into master (8bcd917) will decrease coverage by 0.04%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #7187      +/-   ##
==========================================
- Coverage   34.84%   34.80%   -0.05%     
==========================================
  Files         688      688              
  Lines       80386    80386              
==========================================
- Hits        28013    27976      -37     
- Misses      46672    46727      +55     
+ Partials     5701     5683      -18     

Impacted Files	Coverage Δ
itests/kit/ensemble_opts_nv.go	69.23% <0.00%> (-30.77%)	⬇️
storage/wdpost_sched.go	75.24% <0.00%> (-5.95%)	⬇️
chain/actors/builtin/miner/v2.go	37.77% <0.00%> (-5.58%)	⬇️
miner/miner.go	50.00% <0.00%> (-4.31%)	⬇️
itests/kit/node_miner.go	76.62% <0.00%> (-3.90%)	⬇️
node/hello/hello.go	63.21% <0.00%> (-3.45%)	⬇️
itests/kit/node_full.go	90.62% <0.00%> (-3.13%)	⬇️
chain/stmgr/upgrades.go	27.48% <0.00%> (-1.49%)	⬇️
chain/stmgr/actors.go	42.99% <0.00%> (-1.28%)	⬇️
chain/sync_manager.go	66.77% <0.00%> (-0.63%)	⬇️
... and 14 more

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