ref(session): drop the inert ApiStatus.Internal from IWithSession

The annotation had no mechanical effect: apiValidation configures only
ignoredPackages/ignoredProjects and no nonPublicMarkers, so the type is
tracked in sentry.api either way. Regenerating the dump after removing
it produces no diff.

The interface still has to be public, since the lambda in
InternalSentrySdk.captureEnvelopeNonTerminating targets it from
io.sentry.android.core.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: buenaflor

sentry/src/main/java/io/sentry/Scope.java

@@ -1018,7 +1018,6 @@ public Session withSession(final @NotNull IWithSession sessionCallback) {
   }
 
   /** The IWithSession callback */
-  @ApiStatus.Internal
   public interface IWithSession {
 
     /**