Introduce factory methods in SslInfo and remove MockSslInfo

After further consideration, we have decided to remove the recently
introduced MockSslInfo in favor of introducing the following static
factory methods directly in the SslInfo interface.

- SslInfo.from(String sessionId)

- SslInfo from(String sessionId, X509Certificate... peerCertificates)

See gh-35042
See gh-35078

spring-test/src/main/java/org/springframework/mock/http/server/reactive/MockSslInfo.java

@@ -1,95 +0,0 @@
-/*
- * Copyright 2002-present the original author or authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.springframework.mock.http.server.reactive;
-
-import java.security.cert.X509Certificate;
-
-import org.jspecify.annotations.Nullable;
-
-import org.springframework.core.style.DefaultToStringStyler;
-import org.springframework.core.style.SimpleValueStyler;
-import org.springframework.core.style.ToStringCreator;
-import org.springframework.http.server.reactive.SslInfo;
-
-/**
- * Mock implementation of {@link SslInfo} for use in tests without an actual server.
- *
- * @author Sam Brannen
- * @since 7.0
- */
-public class MockSslInfo implements SslInfo {
-
-	private @Nullable String sessionId;
-
-	private X509Certificate @Nullable [] peerCertificates;
-
-
-	/**
-	 * Construct {@code MockSslInfo} without a session ID or certificates.
-	 */
-	public MockSslInfo() {
-	}
-
-	/**
-	 * Construct {@code MockSslInfo} with a session ID.
-	 */
-	public MockSslInfo(String sessionId) {
-		this.sessionId = sessionId;
-	}
-
-	/**
-	 * Construct {@code MockSslInfo} with a session ID and certificates.
-	 */
-	public MockSslInfo(String sessionId, X509Certificate[] peerCertificates) {
-		this.sessionId = sessionId;
-		this.peerCertificates = peerCertificates;
-	}
-
-
-	/**
-	 * Set the SSL session ID.
-	 */
-	public void setSessionId(String sessionId) {
-		this.sessionId = sessionId;
-	}
-
-	@Override
-	public @Nullable String getSessionId() {
-		return this.sessionId;
-	}
-
-	/**
-	 * Set the SSL certificates associated with the request.
-	 */
-	public void setPeerCertificates(X509Certificate[] peerCertificates) {
-		this.peerCertificates = peerCertificates;
-	}
-
-	@Override
-	public X509Certificate @Nullable [] getPeerCertificates() {
-		return this.peerCertificates;
-	}
-
-	@Override
-	public String toString() {
-		return new ToStringCreator(this, new DefaultToStringStyler(new SimpleValueStyler()))
-				.append("sessionId", this.sessionId)
-				.append("peerCertificates", this.peerCertificates)
-				.toString();
-	}
-
-}