fix: shouldDoInterceptionBasedOnUrl returns true for any valid subdomain

[rishabhpoddar]

Summary of change

The shouldDoInterceptionBasedOnUrl function now returns true if sessionTokenBackendDomain is a valid subdomain of the URL's domain. This aligns with the behavior of browsers when sending cookies to subdomains.

Related issues

• Changing cookieDomain can lead to a session refresh loop supertokens-node#826
• Allow interception for different ports on the same domain supertokens-website#217

Test Plan

(Write your test plan here. If you changed any code, please provide us with clear instructions on how you verified your changes work. Bonus points for screenshots and videos!)

Documentation changes

(If relevant, please create a PR in our docs repo, or create a checklist here highlighting the necessary changes)

Checklist for important updates

• Changelog has been updated
• frontendDriverInterfaceSupported.json file has been updated (if needed)
  • Along with the associated array in SuperTokensIOS/Classes/Version.swift
• Changes to the version if needed
  • In SuperTokensIOS/Classes/Version.swift
  • In SuperTokensIOS.podspec
• Had installed and ran the pre-commit hook
• Issue this PR against the latest non released version branch.
  • To know which one it is, run find the latest released tag (git tag) in the format vX.Y.Z, and then find the latest branch (git branch --all) whose X.Y is greater than the latest released tag.
  • If no such branch exists, then create one from the latest released branch.

Remaining TODOs for this PR

• Item1
• Item2