Ignore __screenshots__ folders generated during test execution.

[manstis]

This PR does not need a corresponding Jira item.

Description

Add __screenshots__ folders to .gitignore and tidy-up existing resources.

Testing

N/A

Steps to test

N/A

Scenarios tested

N/A

Production deployment

• This code change is ready for production on its own
• This code change requires the following considerations before going to production:

[github-actions]

# npm audit report

prismjs  <1.30.0
Severity: moderate
PrismJS DOM Clobbering vulnerability - https://github.com/advisories/GHSA-x7hr-w5r2-h6wg
No fix available
node_modules/refractor/node_modules/prismjs
  refractor  <=4.6.0
  Depends on vulnerable versions of prismjs
  node_modules/refractor
    react-syntax-highlighter  >=6.0.0
    Depends on vulnerable versions of refractor
    node_modules/react-syntax-highlighter
      @patternfly/chatbot  *
      Depends on vulnerable versions of react-syntax-highlighter
      node_modules/@patternfly/chatbot

vite  6.2.0 - 6.2.3
Severity: moderate
Vite has a `server.fs.deny` bypassed for `inline` and `raw` with `?import` query - https://github.com/advisories/GHSA-4r4m-qw57-chr8
fix available via `npm audit fix`
node_modules/vite

5 moderate severity vulnerabilities

To address issues that do not require attention, run:
  npm audit fix

Some issues need review, and may require choosing
a different dependency.

[github-actions]

# npm audit report

prismjs  <1.30.0
Severity: moderate
PrismJS DOM Clobbering vulnerability - https://github.com/advisories/GHSA-x7hr-w5r2-h6wg
No fix available
node_modules/refractor/node_modules/prismjs
  refractor  <=4.6.0
  Depends on vulnerable versions of prismjs
  node_modules/refractor
    react-syntax-highlighter  >=6.0.0
    Depends on vulnerable versions of refractor
    node_modules/react-syntax-highlighter
      @patternfly/chatbot  *
      Depends on vulnerable versions of react-syntax-highlighter
      node_modules/@patternfly/chatbot

4 moderate severity vulnerabilities

Some issues need review, and may require choosing
a different dependency.

[manstis]

There's no fix available for the npm audit issue:

#1603 (comment)

[TamiTakamiya]

@manstis Thank you very much, it should have been done long before....

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud