[SPARK-47522][SQL][FOLLOWUP] Add float(p) values for MySQLIntegration…

…Suite

### What changes were proposed in this pull request?

Add float(p) values for MySQLIntegrationSuite

### Why are the changes needed?

test improvements

### Does this PR introduce _any_ user-facing change?

no
### How was this patch tested?

new test cases

### Was this patch authored or co-authored using generative AI tooling?
no

Closes apache#45672 from yaooqinn/SPARK-47522-F.

Authored-by: Kent Yao <yao@apache.org>
Signed-off-by: Dongjoon Hyun <dhyun@apple.com>

connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/MySQLIntegrationSuite.scala

@@ -79,8 +79,10 @@ class MySQLIntegrationSuite extends DockerJDBCIntegrationSuite {
     conn.prepareStatement("INSERT INTO strings VALUES ('the', 'quick', 'brown', 'fox', " +
       "'jumps', 'over', 'the', 'lazy', 'dog', '{\"status\": \"merrily\"}')").executeUpdate()
 
-    conn.prepareStatement("CREATE TABLE floats (f1 FLOAT, f2 FLOAT UNSIGNED)").executeUpdate()
-    conn.prepareStatement("INSERT INTO floats VALUES (1.23, 4.56)").executeUpdate()
+    conn.prepareStatement("CREATE TABLE floats (f1 FLOAT, f2 FLOAT(10), f3 FLOAT(53), " +
+      "f4 FLOAT UNSIGNED, f5 FLOAT(10) UNSIGNED, f6 FLOAT(53) UNSIGNED)").executeUpdate()
+    conn.prepareStatement("INSERT INTO floats VALUES (1.23, 4.56, 7.89, 1.23, 4.56, 7.89)")
+      .executeUpdate()
   }
 
   test("Basic test") {
@@ -267,6 +269,6 @@ class MySQLIntegrationSuite extends DockerJDBCIntegrationSuite {
 
   test("SPARK-47522: Read MySQL FLOAT as FloatType to keep consistent with the write side") {
     val df = spark.read.jdbc(jdbcUrl, "floats", new Properties)
-    checkAnswer(df, Row(1.23f, 4.56d))
+    checkAnswer(df, Row(1.23f, 4.56f, 7.89d, 1.23d, 4.56d, 7.89d))
   }
 }