small feat: add database tips one user select 1 replicas

[o0vO]

Follow guidance, add a small notification to users when they select one replicas in database page.

[cla-assistant]

All committers have signed the CLA.

[sealos-ci-robot]

🤖 Generated by lychee action

Summary

Status	Count
🔍 Total	1166
✅ Successful	365
⏳ Timeouts	0
🔀 Redirected	0
👻 Excluded	800
❓ Unknown	0
🚫 Errors	0

Full action output

Full Github Actions output

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (4ff45a8) 65.45% compared to head (7beccd0) 65.45%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4507   +/-   ##
=======================================
  Coverage   65.45%   65.45%           
=======================================
  Files           8        8           
  Lines         660      660           
=======================================
  Hits          432      432           
  Misses        180      180           
  Partials       48       48           

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