Spring Security 7 should provide migration path from request-matcher="ant" #18211
Description
Describe the bug
XML config does not work for request matcher of type ant as per the xsd.
SEVERE 2025-11-24 10:23:46 30 ebApplicationContext Caused by: java.lang.IllegalArgumentException: No enum constant org.springframework.security.config.http.MatcherType.ant
SEVERE 2025-11-24 10:23:46 30 ebApplicationContext at java.base/java.lang.Enum.valueOf(Enum.java:293)
SEVERE 2025-11-24 10:23:46 30 ebApplicationContext at org.springframework.security.config.http.MatcherType.valueOf(MatcherType.java:37)
SEVERE 2025-11-24 10:23:46 30 ebApplicationContext at org.springframework.security.config.http.MatcherType.fromElement(MatcherType.java:76)
SEVERE 2025-11-24 10:23:46 30 ebApplicationContext at org.springframework.security.config.http.MatcherType.fromElementOrMvc(MatcherType.java:83)
SEVERE 2025-11-24 10:23:46 30 ebApplicationContext at org.springframework.security.config.http.FilterChainMapBeanDefinitionDecorator.decorate(FilterChainMapBeanDefinitionDecorator.java:50)
SEVERE 2025-11-24 10:23:46 30 ebApplicationContext at org.springframework.security.config.SecurityNamespaceHandler.decorate(SecurityNamespaceHandler.java:135)
SEVERE 2025-11-24 10:23:46 30 ebApplicationContext at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.decorateIfRequired(BeanDefinitionParserDelegate.java:1438)
To Reproduce
Create an xml config that has ant matcher
<bean id="myFilter" class="org.springframework.security.web.FilterChainProxy">
<security:filter-chain-map request-matcher="ant">
<security:filter-chain pattern="/my/login/**" filters="myEntryPoint"/>
</security:filter-chain-map>
</bean>
Expected behavior
XML config should support the request matcher types for ant, ciRegex, mvc and regex.