Use daemon thread to report lull operation and move code to FnApiWork…

[y1chi]

…erStatusHandler

Use a deamon thread guarantees that the lull operations are checked with fixed time interval instead of relying on trigger of runner process_bundle_progress request (which may not be happening frequently as needed if no work split is intended).
Code has been moved from sdk worker to the worker status handler since all logic of printing thread dump is also there. Removed full thread dump logging since it is often unreadable in logs plus there are other alternatives to get pretty print full thread dumps such as requesting sdk_status page from runner.

---

Thank you for your contribution! Follow this checklist to help us incorporate your contribution quickly and easily:

• Choose reviewer(s) and mention them in a comment (R: @username).
• Format the pull request title like [BEAM-XXX] Fixes bug in ApproximateQuantiles, where you replace BEAM-XXX with the appropriate JIRA issue, if applicable. This will automatically link the pull request to the issue.
• Update CHANGES.md with noteworthy changes.
• If this contribution is large, please file an Apache Individual Contributor License Agreement.

See the Contributor Guide for more tips on how to make review process smoother.

ValidatesRunner compliance status (on master branch)

Lang	ULR	Dataflow	Flink	Samza	Spark	Twister2
Go	---					---
Java
Python	---					---
XLang						---

Examples testing status on various runners

Lang	ULR	Dataflow	Flink	Samza	Spark	Twister2
Go	---	---	---	---	---	---	---
Java	---		---	---	---	---	---
Python	---	---	---	---	---	---	---
XLang	---	---	---	---	---	---	---

Post-Commit SDK/Transform Integration Tests Status (on master branch)

Go	Java	Python

Pre-Commit Tests Status (on master branch)

---	Java	Python	Go	Website	Whitespace	Typescript
Non-portable
Portable	---			---	---	---

See .test-infra/jenkins/README for trigger phrase, status and link of all Jenkins jobs.

GitHub Actions Tests Status (on master branch)

See CI.md for more information about GitHub Actions CI.

[codecov]

Codecov Report

Merging #15676 (d296688) into master (d6b9156) will decrease coverage by 0.30%.
The diff coverage is 80.00%.

@@            Coverage Diff             @@
##           master   #15676      +/-   ##
==========================================
- Coverage   83.80%   83.50%   -0.31%     
==========================================
  Files         444      445       +1     
  Lines       60465    61290     +825     
==========================================
+ Hits        50675    51182     +507     
- Misses       9790    10108     +318     

Impacted Files	Coverage Δ
...ks/python/apache_beam/runners/worker/sdk_worker.py	89.25% <ø> (+0.09%)	⬆️
...python/apache_beam/runners/worker/worker_status.py	79.71% <80.00%> (+2.15%)	⬆️
sdks/python/apache_beam/io/gcp/bigquery.py	62.72% <0.00%> (-12.84%)	⬇️
...ython/apache_beam/runners/interactive/sql/utils.py	76.09% <0.00%> (-7.91%)	⬇️
...he_beam/runners/interactive/sql/beam_sql_magics.py	49.75% <0.00%> (-4.79%)	⬇️
.../python/apache_beam/testing/test_stream_service.py	88.37% <0.00%> (-4.66%)	⬇️
...ython/apache_beam/io/gcp/bigquery_read_internal.py	53.92% <0.00%> (-4.24%)	⬇️
sdks/python/apache_beam/io/gcp/bigquery_tools.py	82.91% <0.00%> (-3.82%)	⬇️
...hon/apache_beam/runners/direct/test_stream_impl.py	94.02% <0.00%> (-2.24%)	⬇️
...che_beam/runners/interactive/interactive_runner.py	90.74% <0.00%> (-1.86%)	⬇️
... and 49 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update d6b9156...d296688. Read the comment docs.

[y1chi]

R: @pabloem

[y1chi]

Run Python PreCommit

[y1chi]

@pabloem gentle ping for review

[pabloem]

LGTM! Thanks @y1chi great improvement

[pabloem]

feel free to merge