Spring Framework: Java enterprise application framework

Introduces testing improvements, client exception handling enhancements, and various performance optimizations.

• –Introduce Spring property to disable context pausing for tests
• –Avoid unnecessary pausing of application contexts in the TestContext framework
• –DisconnectedClientHelper should detect presence of RestClientException and WebClientException separately
• –Deprecate PagedListHolder and PropertyComparator for removal
• –Add DataAccessException and MessagingException to the excluded outermost exceptions in DisconnectedClientHelper

Introduces performance optimizations, retry mechanism enhancements, and improvements to testing and WebFlux.

• –Avoid unnecessary list creation and processing in AbstractTestContextBootstrapper
• –AbstractTestContextBootstrapper should resolve ContextLoader only once
• –Log RetryException for @Retryable methods
• –Consistently stop already started Lifecycle beans on cancelled refresh
• –Support timeouts in @Retryable and RetryPolicy

Fixes package cycle issues and improves WebSocket session handling with concurrent transaction support.

• –Avoid package cycle caused by use of UriComponentsBuilder in ServletServerHttpRequest
• –DefaultHandshakeHandler should not log client faults on error level
• –Use concurrent set behind reactive TransactionSynchronizationManager#registerSynchronization
• –Expose Collection<ModelAndView> on FragmentsRendering to facilitate Unit Tests
• –Different ReactorNettyWebSocketSession call getId() may return the same value