Remove javascript:void(0) from links that do not navigate

[stevehobbsdev]

Changes

This PR removes javascript:void(0) from those links that do not navigate
natively using the browser, but perform some other action using a JS callback
handler. In most cases, these links were already covered by a call to
preventDefault() on the event object anyway.

The motivation is to stop warnings from React about using javascript: URLs
for security reasons. Note that our usage of javascript:void(0) does not
cause a security issue as there's no chance of malicious content being injected
by a third party, but we have refactored out the links all the same.

References

#1917

Testing

Please describe how this can be tested by reviewers. Be specific about anything not tested and reasons why. If this library has unit and/or integration testing, tests should be added for new functionality and existing tests should complete without errors.

• This change adds unit test coverage
• This change adds integration test coverage
• This change has been tested on the latest version of the platform/language

Checklist

• I have read the Auth0 general contribution guidelines
• I have read the Auth0 Code of Conduct
• All existing and new tests complete without errors
• All code quality tools/guidelines have been run/followed
• All relevant assets have been compiled
• All active GitHub checks have passed