Improve AI feature banners to match the feature status

[NipuniBhagya]

Purpose

This PR improves the AI feature banner to cater to instances in Identity Server where the WSO2 AI subscription key is not configured.

This also addresses static feature flags in AI features.

Related Issues

• Revise the visibility of AI-powered feature banners in default setup product-is#22620
• Unable to Configure AI Branding - "Branding generation failed Unknown error occurred" product-is#22553
• Unable to Configure Application Login Flow via AI-Powered Login Flow - "Unexpected Processing Error" product-is#22555
• "BETA" label is shown in branding and AI features product-is#22725
• "NEW" label is shown in Push Provider configuration product-is#22720

Related PRs

• N/A

Checklist

• e2e cypress tests locally verified. (for internal contributers)
• Manual test round performed and verified.
• UX/UI review done on the final implementation.
• Documentation provided. (Add links if there are any)
• Relevant backend changes deployed and verified
• Unit tests provided. (Add links if there are any)
• Integration tests provided. (Add links if there are any)

Security checks

• Followed secure coding standards in http://wso2.com/technical-reports/wso2-secure-engineering-guidelines
• Ran FindSecurityBugs plugin and verified report
• Confirmed that this PR doesn't commit any keys, passwords, tokens, usernames, or other secrets

[wso2-jenkins-bot]

🦋 Changeset detected

The changes in this PR will be included in the next version bump.

Not sure what this means? Click here to learn what changesets are.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 41.77%. Comparing base (ce71be6) to head (0439079).
Report is 130 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7519      +/-   ##
==========================================
- Coverage   41.98%   41.77%   -0.22%     
==========================================
  Files          42       42              
  Lines         936      936              
  Branches      227      235       +8     
==========================================
- Hits          393      391       -2     
- Misses        499      501       +2     
  Partials       44       44              

Flag	Coverage Δ
@wso2is/core	41.77% <ø> (-0.22%)	⬇️

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

see 1 file with indirect coverage changes