修复特定情况下BiMap覆盖Value后，仍能通过旧Value查询到Key问题

hutool-core/src/test/java/cn/hutool/core/map/IssueI88R5MTest.java

@@ -0,0 +1,17 @@
+package cn.hutool.core.map;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.LinkedHashMap;
+
+public class IssueI88R5MTest {
+	@Test
+	public void biMapTest() {
+		final BiMap<String, Integer> biMap = new BiMap<>(new LinkedHashMap<>());
+		biMap.put("aaa", 111);
+		biMap.getKey(111);
+		biMap.put("aaa", 222);
+		Assert.assertNull(biMap.getKey(111));
+	}
+}