[SPARK-26286][TEST] Add MAXIMUM_PAGE_SIZE_BYTES exception bound unit …

…test

## What changes were proposed in this pull request?
Add MAXIMUM_PAGE_SIZE_BYTES Exception test

## How was this patch tested?
Existing tests

(Please explain how this patch was tested. E.g. unit tests, integration tests, manual tests)
(If this patch involves UI changes, please attach a screenshot; otherwise, remove this)

Please review http://spark.apache.org/contributing.html before opening a pull request.

Closes apache#23226 from wangjiaochun/BytesToBytesMapSuite.

Authored-by: 10087686 <wang.jiaochun@zte.com.cn>
Signed-off-by: Hyukjin Kwon <gurwls223@apache.org>

core/src/test/java/org/apache/spark/unsafe/map/AbstractBytesToBytesMapSuite.java

@@ -622,6 +622,17 @@ public void initialCapacityBoundsChecking() {
     } catch (IllegalArgumentException e) {
       // expected exception
     }
+
+    try {
+      new BytesToBytesMap(
+        taskMemoryManager,
+        1,
+        TaskMemoryManager.MAXIMUM_PAGE_SIZE_BYTES + 1);
+      Assert.fail("Expected IllegalArgumentException to be thrown");
+    } catch (IllegalArgumentException e) {
+      // expected exception
+    }
+
   }
 
   @Test