fix(lifecycle-operator): avoid setting the overall state of an App or WorkloadInstance between state transitions

[bacherfl]

Closes #1870

[netlify]

✅ Deploy Preview for keptn-lifecycle-toolkit ready!

Name	Link
🔨 Latest commit	f2fd316
🔍 Latest deploy log	https://app.netlify.com/sites/keptn-lifecycle-toolkit/deploys/64dcad247f59830008ca300a
😎 Deploy Preview	https://deploy-preview-1871--keptn-lifecycle-toolkit.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[codecov]

Codecov Report

Merging #1871 (f2fd316) into main (4407fc4) will increase coverage by 0.02%.
The diff coverage is 75.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1871      +/-   ##
==========================================
+ Coverage   83.52%   83.55%   +0.02%     
==========================================
  Files         136      136              
  Lines        8431     8427       -4     
==========================================
- Hits         7042     7041       -1     
+ Misses       1131     1129       -2     
+ Partials      258      257       -1     

Files Changed	Coverage Δ
...ecycle-operator/controllers/common/phasehandler.go	80.95% <ø> (-0.30%)	⬇️
...ontrollers/lifecycle/keptnappversion/controller.go	82.30% <75.00%> (+1.85%)	⬆️

Flag	Coverage Δ
certificate-operator	68.55% <ø> (ø)
component-tests	59.07% <0.00%> (+0.32%)	⬆️
lifecycle-operator	84.92% <75.00%> (+0.04%)	⬆️
metrics-operator	83.62% <ø> (ø)
scheduler	32.12% <ø> (ø)

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

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication