[FEATURE REQ] Improve AadAuthenticationFilterAutoConfiguration dependencies

[moarychan]

Context

Currently, SCA provides the configuration AadAuthenticationFilterAutoConfiguration to support resource server scenarios, but there's a condition @ConditionalOnMissingClass({ "org.springframework.security.oauth2.server.resource.authentication.BearerTokenAuthenticationToken" }) to block using the resource server dependencies, SCA should improve this limitation.

Goal

Make the configuration AadAuthenticationFilterAutoConfiguration enabled when the resource server dependencies exist.

• Update samples to use a resource server starter, not the spring-security-oauth2-core, see comments from PR Fix bugs in branch v6.0.0-beta.2 Azure-Samples/azure-spring-boot-samples#582
• Update doc(migration & code snappets)

[chenrujun]

but there's a condition @ConditionalOnMissingClass({ "org.springframework.security.oauth2.server.resource.authentication.BearerTokenAuthenticationToken" }) to block using the resource server

IMU, it's designed by purpose. When using spring-security-oauth2-resource-server (BearerTokenAuthenticationToken), AadAuthenticationFilterAutoConfiguration should not be enabled.

AadAuthenticationFilterAutoConfiguration is a method to implement resource-server, spring-security-oauth2-resource-server is another way to implement resource-server. The 2 methods should not work at the same time.

This is first added in this commit by @moarychan .

[github-actions]

Hi @moarychan, we deeply appreciate your input into this project. Regrettably, this issue has remained unresolved for over 2 years and inactive for 30 days, leading us to the decision to close it. We've implemented this policy to maintain the relevance of our issue queue and facilitate easier navigation for new contributors. If you still believe this topic requires attention, please feel free to create a new issue, referencing this one. Thank you for your understanding and ongoing support.