ServletContextListener never invoked

*Serverless Java Container version*: `1.9.1`

*Implementations:* `Spring Boot 2`

*Framework version:* `SpringBoot 2.7.5`

*Frontend service:* `HTTP API`

*Deployment method:* `SAM`

## Scenario
Hilla initializes some parts through a `ServletContextInitializer` that uses `servletContext.addListener` to add a `ServletContextListener` to the context. The actual initialization then takes place in the `ServletContextListener`. The problem is that the `addListener` method of `AwsServletContext` is empty.

Not sure where the correct place would be to invoke the listener. It seems to happen to work if I invoke the listener immediately.

## Expected behavior
The added listener is called

## Actual behavior
The added listener is ignored

Start by inspecting AwsServletContext.addListener and the ServletContextInitializer and ServletContextListener lifecycle described in the issue. Trace how the AWS servlet context is created and determine where the registered listener should be invoked. Done means an added ServletContextListener is called during initialization without breaking the Spring Boot serverless startup path.

Written by the indexing model from the issue text.