Dynamically load oauth-related libraries (backport #11448)

[mergify]

Proposed Changes

It addresses one issue raised and two more issues found but not raised:

• Load oauth javascript dependencies only when they are required #11421
• the logged in user's name should only be a hyperlink to the user's record when the user is an administrator and it has been authenticated with the internal backend. In other words, if the user was authenticated with oauth or ldap or http, there is no internal record of the user hence the username should not be rendered as a hyperlink.
• disable browser login dialog-box and instead always redirect the user to the login html page when either the credentials are wrong or user is not authorized or session has expired

Types of Changes

What types of changes does your code introduce to this project?
Put an x in the boxes that apply

• Bug fix (non-breaking change which fixes issue #NNNN)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause an observable behavior change in existing systems)
• Documentation improvements (corrections, new content, etc)
• Cosmetic change (whitespace, formatting, etc)
• Build system and/or CI

---

This is an automatic backport of pull request #11448 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of ccb0059 has failed:

On branch mergify/bp/v3.13.x/pr-11448
Your branch is up to date with 'origin/v3.13.x'.

You are currently cherry-picking commit ccb0059cd4.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   deps/rabbitmq_management/priv/www/index.html
	modified:   deps/rabbitmq_management/priv/www/js/global.js
	modified:   deps/rabbitmq_management/priv/www/js/main.js
	modified:   deps/rabbitmq_management/priv/www/js/oidc-oauth/helper.js
	modified:   deps/rabbitmq_management/priv/www/js/oidc-oauth/login-callback.html
	modified:   deps/rabbitmq_management/priv/www/js/oidc-oauth/logout-callback.html
	modified:   deps/rabbitmq_management/priv/www/js/oidc-oauth/oidc-client-ts.js
	modified:   deps/rabbitmq_management/selenium/bin/components/devkeycloak
	modified:   deps/rabbitmq_management/selenium/bin/components/prodkeycloak
	modified:   deps/rabbitmq_management/selenium/full-suite-management-ui
	modified:   deps/rabbitmq_management/selenium/package.json
	new file:   deps/rabbitmq_management/selenium/suites/authnz-mgt/basic-auth-with-mgt-prefix.sh
	modified:   deps/rabbitmq_management/selenium/test/basic-auth/imports/users.json
	modified:   deps/rabbitmq_management/selenium/test/basic-auth/rabbitmq.conf
	new file:   deps/rabbitmq_management/selenium/test/basic-auth/rabbitmq.mgt-prefix.conf
	new file:   deps/rabbitmq_management/selenium/test/basic-auth/session-expired.js
	new file:   deps/rabbitmq_management/selenium/test/basic-auth/unauthorized.js
	modified:   deps/rabbitmq_management/selenium/test/oauth/imports/users.json
	new file:   deps/rabbitmq_management/selenium/test/oauth/with-basic-auth/unauthorized.js
	modified:   deps/rabbitmq_management/selenium/test/oauth/with-sp-initiated/unauthorized.js
	modified:   deps/rabbitmq_management/selenium/test/pageobjects/BasePage.js
	modified:   deps/rabbitmq_management/selenium/test/pageobjects/LoginPage.js
	modified:   deps/rabbitmq_management/test/rabbit_mgmt_http_SUITE.erl
	modified:   deps/rabbitmq_management_agent/src/rabbit_mgmt_format.erl
	modified:   deps/rabbitmq_web_dispatch/src/rabbit_web_dispatch_access_control.erl

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   deps/rabbitmq_management/src/rabbit_mgmt_oauth_bootstrap.erl

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