Use PathPatternParser by default in Spring MVC

[rstoyanchev]

PathPatternParser was introduced for WebFlux in 5.0 as a replacement for AntPathMatcher that uses pre-compiled patterns, supports mapping without decoding the full URL path, and optimizes the pattern syntax for web (vs file system) paths.

It has been available for use in Spring MVC since version 5.3 and has been enabled as the default in Spring Boot since version 2.6 with spring-projects/spring-boot#24805.

This issue is to consider switching the default in Spring Framework to PathPatternParser for 6.0, and potentially deprecate PathMatcher and related options.

[bclozel]

I think we should do this (including the deprecation) for 6.0.

[rstoyanchev]

Team decision: we'll go ahead with it and align with the default in Boot.