Refactor Custom Authenticator Settings Page

[Shenali-SJ]

Purpose

This PR refactors the custom authenticator settings page by extracting the code to a new react component. It also utilizes form spy to handle validations.

settings.mov

Related Issues

• Error when clicking updating without doing any changes in custom authentiactor settings product-is#22564

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 41.77%. Comparing base (4502715) to head (54bf5fa).
Report is 13 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #7499   +/-   ##
=======================================
  Coverage   41.77%   41.77%           
=======================================
  Files          42       42           
  Lines         936      936           
  Branches      235      235           
=======================================
  Hits          391      391           
+ Misses        545      501   -44     
- Partials        0       44   +44     

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

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see 12 files with indirect coverage changes

[wso2-jenkins-bot]

🦋 Changeset detected

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

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