Enable javadoc-warnings-error for oauth2-resource-server

[zooo-code]

This is my first contribution to Spring Security!
and my first open source contribution, so there may be many shortcomings.

This PR enables the javadoc-warnings-error plugin for the spring-security-oauth2-resource-server module as part of gh-18443

Changes

• Applied javadoc-warnings-error plugin to fail the build on Javadoc warnings

Verification

• Verified that ./gradlew :spring-security-oauth2-resource-server:javadoc passes without warnings

thanks!!!

Closes gh-18463

[rwinch]

Thanks for the Pull Request & congrats on your first PR to Spring Security! This is now merged into main 😄

[zooo-code]

Thanks for the Pull Request & congrats on your first PR to Spring Security! This is now merged into main 😄

@rwinch Thank you so much for the warm welcome and for merging my PR! I'm thrilled to make my first contribution to Spring Security. Looking forward to contributing more in the future!