feat(metrics): fragment level streaming metrics (part 2)

[fuyufjh]

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

What's changed and what's your intention?

By default, display all the metrics under "Streaming Actors" section in fragment level.

Close #12381.

Now I keep the actor-level metrics as hidden (see target_hidden()). But for better code readability, shall we just remove it? After all, to check actor-level metrics, simply change the "fragment_id" to "actor_id" on the PromQL query.

Checklist

• I have written necessary rustdoc comments
• I have added necessary unit tests and integration tests
• I have added fuzzing tests or opened an issue to track them. (Optional, recommended for new SQL features Sqlsmith: Sql feature generation #7934).
• My PR contains breaking changes. (If it deprecates some features, please create a tracking issue to remove them in the future).
• All checks passed in ./risedev check (or alias, ./risedev c)
• My PR changes performance-critical code. (Please run macro/micro-benchmarks and show the results.)

• My PR contains critical fixes that are necessary to be merged into the latest release. (Please check out the details)

Documentation

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

Release note

No need.

[st1page]

LGTM.
more radical, maybe we can remove all the actor-based metrics with #13208?

[codecov]

Codecov Report

Merging #13196 (b45edf8) into main (4daf642) will decrease coverage by 0.01%.
Report is 1 commits behind head on main.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main   #13196      +/-   ##
==========================================
- Coverage   68.13%   68.13%   -0.01%     
==========================================
  Files        1515     1515              
  Lines      257091   257091              
==========================================
- Hits       175177   175163      -14     
- Misses      81914    81928      +14     

Flag	Coverage Δ
rust	68.13% <100.00%> (-0.01%)	⬇️

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

Files	Coverage Δ
src/stream/src/executor/monitor/streaming_stats.rs	95.69% <100.00%> (ø)
src/stream/src/executor/over_window/general.rs	86.84% <ø> (ø)

... and 3 files with indirect coverage changes

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[fuyufjh]

LGTM. more radical, maybe we can remove all the actor-based metrics with #13208?

Either LGTM 🥰