Add error page for UAE Pass authenticator

[hwupathum]

Purpose

This pull request includes updates to the internationalization files for the authentication portal and the addition of a new JSP file to handle UAE Pass authentication errors. The changes primarily focus on adding support for UAE Pass error messages in multiple languages and introducing a new error page.

Internationalization updates:

• Added UAE Pass error messages to the Resources.properties file for English.
• Added UAE Pass error messages to the Resources_de_DE.properties file for German.
• Added UAE Pass error messages to the Resources_es_ES.properties file for Spanish.
• Added UAE Pass error messages to the Resources_fr_FR.properties file for French.
• Added UAE Pass error messages to the Resources_ja_JP.properties file for Japanese.
• Added UAE Pass error messages to the Resources_pt_BR.properties file for Brazilian Portuguese.
• Added UAE Pass error messages to the Resources_pt_PT.properties file for European Portuguese.
• Added UAE Pass error messages to the Resources_zh_CN.properties file for Simplified Chinese.

New error page:

• Introduced a new JSP file uaePassError.jsp to display UAE Pass specific error messages to the user, including handling user-cancelled authentication and other failure scenarios.

Related Issues

• Display UAEPass Authentication Errors to the End Users product-is#22168

Related PRs

• Redirect to error page UAEPass Authentication Errors wso2-extensions/identity-outbound-auth-uaepass#22

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 36.04%. Comparing base (4a37f32) to head (5758637).
Report is 138 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7288      +/-   ##
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+ Coverage   32.32%   36.04%   +3.71%     
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  Files          42       42              
  Lines         897      899       +2     
  Branches      204      222      +18     
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+ Hits          290      324      +34     
+ Misses        607      575      -32     

Flag	Coverage Δ
@wso2is/core	36.04% <ø> (+3.71%)	⬆️

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[wso2-jenkins-bot]

🦋 Changeset detected

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

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[brionmario]

LGTM.

+1 to merge from my side.