Minor flow cleanups/20240613/v2

[inashivb]

Link to ticket: https://redmine.openinfosecfoundation.org/issues/

Previous PR: #11302

Changes since v1:

• rebased on top of latest master
• clang fmt fixes done
• cleanups to flow-timeout.c

[inashivb]

not really happy with this name. Suggestions welcome.

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 10 lines in your changes missing coverage. Please review.

Project coverage is 82.47%. Comparing base (49ecf37) to head (0e112c0).

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #11311      +/-   ##
==========================================
- Coverage   82.47%   82.47%   -0.01%     
==========================================
  Files         934      934              
  Lines      252270   252270              
==========================================
- Hits       208055   208054       -1     
- Misses      44215    44216       +1     

Flag	Coverage Δ
fuzzcorpus	60.26% <42.85%> (-0.01%)	⬇️
livemode	18.76% <33.33%> (+<0.01%)	⬆️
pcap	43.74% <95.23%> (-0.04%)	⬇️
suricata-verify	61.32% <95.23%> (+<0.01%)	⬆️
unittests	59.92% <6.66%> (+<0.01%)	⬆️

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

[suricata-qa]

WARNING:

field	baseline	test	%
	SURI_TLPR1_stats_chk
.uptime	642	664	103.43%

Pipeline 21106

[suricata-qa]

Information: QA ran without warnings.

Pipeline 21123