ISPN-15081 Patternfly 5 update

[dpanshug]

https://issues.redhat.com/browse/ISPN-15081

Summary of changes:

1. Node and npm Update:

   • Updated Node.js version to v18.17.0 and npm to 9.6.7 in github/pull_request.yaml and pom.xml.

2. Patternfly Update:

   • Upgraded patternfly packages to latest versions (PF5) .

3. React Version Upgrade:

   • Transitioned to React 18.

4. Other Package Updates: Reviewed and updated all other packages for compatibility and enhancements, except the following:

   a. css-loader:
   - Requires adjustments to webpack configuration.
   - Another issue for it ISPN-15145

   b. react-router-dom:
   - Requires modifications to router config throughout the project.
   - Another issue for it ISPN-15146

   c. monaco-editor & react-monaco-editor:
   - Can't update due to PF5's reliance on outdated dependencies.

5. Separately modified background image on Welcome and About page.

[dpanshug]

Background image issue raise patternfly/patternfly#5806

[dpanshug]

@karesti @andyuk1986 this PR is ready for final review

[dpanshug]

Background image issue raise patternfly/patternfly#5806

Added custom CSS to solve this

[karesti]

@dpanshug added a commit. Popover was broken, I fixed that and a couple small unrelated changes introduced with the UX refactoring

[karesti]

looks good, I fixed the error with the Popover

Please double check the patternfly v5 css properties that were renamed

[dpanshug]

@andyuk1986 Can you please re-review this, some tests are failing.

[karesti]

@dpanshug I'm on the review and some fixes

[karesti]

@dpanshug if you plan to update or do follow up PR that are not mandatory for this one, please, create JIRAS with the explanation and content of those changes to be done. If you can't do it, I or somebody else will take care of those changes.

[dpanshug]

@dpanshug if you plan to update or do follow up PR that are not mandatory for this one, please, create JIRAS with the explanation and content of those changes to be done. If you can't do it, I or somebody else will take care of those changes.

Created JIRA's for those, ISPN-15146 ISPN-15145

[karesti]

@andyuk1986 the test passed here so I merged, but it's failing in main

[andyuk1986]

Hey @karesti , I was on PTO. Will look at the tests in main.