SpringBoot Fix package tangle in spring-boot caused by Environment creation in SpringApplication

See #32815 for background.

We have a tangle caused by SpringApplication knowing about servlet and reactive environment types. This is quite similar to #30272

Comment From: izeye

463a614d271bfc82602cecaf9863413b0566526a doesn't seem to have been included in Spring Boot 2.6.13.

See https://github.com/spring-projects/spring-boot/commits/v2.6.13

Comment From: wilkinsona

Thanks, @izeye. I've corrected the milestone.