Improve email domain discovery page to incorporate new configuration for enabling email domain discovery for self-registration

[Yasasr1]

Purpose

Following improvements will be made to the existing email domain discovery page

• Generalize the page name to "Organization Discovery"
• Move down the assign email domain button from top right corner to separate email domain discovery related configs from email domain mappings for organizations
• Improve the info message at the top to mention the flows that restricts email domains when email domain discovery is enabled
• Add a checkbox to incorporate the new config: email domain based organization discovery for self-registration

Related issue

• Improve email domain discovery page to incorporate new configuration for enabling email domain discovery for self-registration  product-is#21610

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 32.02%. Comparing base (ef0a800) to head (6ca0f80).
Report is 1072 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7084      +/-   ##
==========================================
+ Coverage   31.79%   32.02%   +0.22%     
==========================================
  Files          41       41              
  Lines         890      893       +3     
  Branches      220      220              
==========================================
+ Hits          283      286       +3     
- Misses        557      587      +30     
+ Partials       50       20      -30     

Flag	Coverage Δ
@wso2is/core	32.02% <ø> (+0.22%)	⬆️

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see 10 files with indirect coverage changes

missing changeset for a changed package

[wso2-jenkins-bot]

🦋 Changeset detected

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

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