[SPARK-38633][SQL][FOLLOWUP] JDBCSQLBuilder should build cast to type of databases

### What changes were proposed in this pull request?
DS V2 supports push down CAST to database.
The current implement only uses the typeName of DataType.
For example: `Cast(column, StringType)` will be build to `CAST(column AS String)`.
But it should be `CAST(column AS TEXT)` for Postgres or `CAST(column AS VARCHAR2(255))` for Oracle.

### Why are the changes needed?
Improve the implement of push down CAST.

### Does this PR introduce _any_ user-facing change?
'No'.
Just new feature.

### How was this patch tested?
Exists tests

Closes #35999 from beliefer/SPARK-38633_followup.

Authored-by: Jiaan Geng <[email protected]>
Signed-off-by: Wenchen Fan <[email protected]>

Author: beliefer

sql/core/src/main/scala/org/apache/spark/sql/jdbc/JdbcDialects.scala

@@ -234,6 +234,12 @@ abstract class JdbcDialect extends Serializable with Logging{
       }
       quoteIdentifier(namedRef.fieldNames.head)
     }
+
+    override def visitCast(l: String, dataType: DataType): String = {
+      val databaseTypeDefinition =
+        getJDBCType(dataType).map(_.databaseTypeDefinition).getOrElse(dataType.typeName)
+      s"CAST($l AS $databaseTypeDefinition)"
+    }
   }
 
   /**