Use substring instead of replaceFirst in OAuth2AuthorizationConsent

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Expected Behavior
Will bring 40 times the performance improvement

Current Behavior

Context
Recently, I have been studying the source code of this framework, and during this period, I have discovered some code that may have optimization value. such as:

spring-authorization-server/oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/OAuth2AuthorizationConsent.java

Line 96 in 878a75d

authorities.add(authority.getAuthority().replaceFirst(AUTHORITIES_SCOPE_PREFIX, ""));

I conducted a simple test and achieved a 40 times performance improvement.