chore: show the recoverable time when describing the cluster

[wangyelei]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 35.10638% with 61 lines in your changes are missing coverage. Please review.

Project coverage is 42.80%. Comparing base (752c2c9) to head (0e0a3b1).
Report is 1 commits behind head on main.

Files	Patch %	Lines
pkg/cmd/cluster/describe.go	25.35%	46 Missing and 7 partials ⚠️
pkg/cmd/cluster/describe_ops.go	60.00%	4 Missing ⚠️
pkg/cmd/cluster/operations.go	40.00%	3 Missing ⚠️
pkg/cmd/cluster/config_observer.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #329      +/-   ##
==========================================
- Coverage   42.84%   42.80%   -0.05%     
==========================================
  Files         213      213              
  Lines       29031    29099      +68     
==========================================
+ Hits        12438    12455      +17     
- Misses      15059    15104      +45     
- Partials     1534     1540       +6     

Flag	Coverage Δ
unittests	42.80% <35.10%> (-0.05%)	⬇️

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[wangyelei]

/approved

[wangyelei]

/cherry-pick release-0.9

[github-actions]

🤖 says: cherry pick action finished successfully 🎉!
See: https://github.com/apecloud/kbcli/actions/runs/8982998935