feat(streaming): migrate TopNExecutor to ExecutorV2

[a9QrX3Lu]

What's changed and what's your intention?

As title.

Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests

Refer to a related PR or issue link (optional)

Close #1735

[CLAassistant]

All committers have signed the CLA.

[codecov]

Codecov Report

Merging #1737 (6547124) into main (01947e4) will decrease coverage by 0.03%.
The diff coverage is 83.73%.

@@            Coverage Diff             @@
##             main    #1737      +/-   ##
==========================================
- Coverage   71.16%   71.12%   -0.04%     
==========================================
  Files         601      603       +2     
  Lines       77950    78066     +116     
==========================================
+ Hits        55470    55527      +57     
- Misses      22480    22539      +59     

Flag	Coverage Δ
rust	71.12% <83.73%> (-0.04%)	⬇️

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

Impacted Files	Coverage Δ
src/stream/src/executor/top_n.rs	0.00% <0.00%> (-86.53%)	⬇️
src/stream/src/executor_v2/error.rs	0.00% <0.00%> (ø)
src/stream/src/executor_v2/mod.rs	55.81% <ø> (ø)
src/stream/src/executor_v2/v1_compat.rs	38.46% <0.00%> (-5.66%)	⬇️
src/stream/src/executor_v2/top_n_executor.rs	17.39% <17.39%> (ø)
src/stream/src/executor_v2/top_n.rs	90.76% <90.76%> (ø)
src/stream/src/executor/top_n_appendonly.rs	84.53% <100.00%> (ø)
src/connector/src/filesystem/file_common.rs	80.80% <0.00%> (+0.44%)	⬆️

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[lmatz]

LGTM!