detect: only apply ConfigApplyTx with app-layers

[catenacyber]

Link to redmine ticket:
https://redmine.openinfosecfoundation.org/issues/4972

Describe changes:

• detect: only apply ConfigApplyTx with app-layers

If the scope is flow it should require a flow to be present.

How do we do that ?
I do not see SIG_FLAG_FLOW

[codecov]

Codecov Report

Merging #7015 (9c596ec) into master (e04fcfc) will decrease coverage by 0.03%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #7015      +/-   ##
==========================================
- Coverage   77.69%   77.65%   -0.04%     
==========================================
  Files         628      628              
  Lines      185635   185637       +2     
==========================================
- Hits       144221   144149      -72     
- Misses      41414    41488      +74     

Flag	Coverage Δ
fuzzcorpus	58.04% <100.00%> (-0.32%)	⬇️
suricata-verify	54.45% <100.00%> (+0.02%)	⬆️
unittests	63.04% <100.00%> (+<0.01%)	⬆️

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

[victorjulien]

I think the SIG_MASK_REQUIRE_FLOW can be of use here. You may need to dig around a bit to see how you can trigger it getting set.

[victorjulien]

I think the SIG_MASK_REQUIRE_FLOW can be of use here. You may need to dig around a bit to see how you can trigger it getting set.

Or how it is set in other places for inspiration.

[catenacyber]

Thanks Victor, done in #7063