refactor(risedev): refine error reporting

[BugenZhao]

I hereby agree to the terms of the RisingWave Labs, Inc. Contributor License Agreement.

What's changed and what's your intention?

• Disable backtrace for risedev-dev itself to make it more user-friendly.
• Provide more error context if possible.
• Minor refactor to wait_http to reduce duplication.
• Avoid repeating the error after main returns.

Checklist

• I have written necessary rustdoc comments
• I have added necessary unit tests and integration tests
• All checks passed in ./risedev check (or alias, ./risedev c)

Documentation

• My PR needs documentation updates. (Please use the Release note section below to summarize the impact on users)

Release note

If this PR includes changes that directly affect users or other significant modifications relevant to the community, kindly draft a release note to provide a concise summary of these changes. Please prioritize highlighting the impact these changes will have on users.

[codecov]

Codecov Report

Attention: 51 lines in your changes are missing coverage. Please review.

Comparison is base (04aca78) 67.76% compared to head (968a2b8) 67.82%.
Report is 2 commits behind head on main.

Files	Patch %	Lines
src/risedevtool/src/task.rs	0.00%	27 Missing ⚠️
src/risedevtool/src/bin/risedev-dev.rs	0.00%	11 Missing ⚠️
src/risedevtool/src/wait.rs	0.00%	10 Missing ⚠️
src/risedevtool/src/task/task_kafka_ready_check.rs	0.00%	2 Missing ⚠️
src/risedevtool/src/task/task_etcd_ready_check.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #13455      +/-   ##
==========================================
+ Coverage   67.76%   67.82%   +0.06%     
==========================================
  Files        1528     1528              
  Lines      260887   260897      +10     
==========================================
+ Hits       176779   176946     +167     
+ Misses      84108    83951     -157     

Flag	Coverage Δ
rust	67.82% <0.00%> (+0.06%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.