[MINOR][SQL] Fix error position of NOSCAN

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

Point to correct position when miswrite `NOSCAN` detects.

### Why are the changes needed?

Before:

```
[info]   org.apache.spark.sql.catalyst.parser.ParseException: Expected `NOSCAN` instead of `SCAN`(line 1, pos 0)
[info]
[info] == SQL ==
[info] ANALYZE TABLE analyze_partition_with_null PARTITION (name) COMPUTE STATISTICS SCAN
[info] ^^^
```

After:

```
[info]   org.apache.spark.sql.catalyst.parser.ParseException: Expected `NOSCAN` instead of `SCAN`(line 1, pos 78)
[info]
[info] == SQL ==
[info] ANALYZE TABLE analyze_partition_with_null PARTITION (name) COMPUTE STATISTICS SCAN
[info] ------------------------------------------------------------------------------^^^
```

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

Yes, user will see better error message.

### How was this patch tested?

Manually test.

Closes #27662 from Ngone51/fix_noscan_reference.

Authored-by: yi.wu <yi.wu@databricks.com>
Signed-off-by: Takeshi Yamamuro <yamamuro@apache.org>

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala

@@ -3186,7 +3186,8 @@ class AstBuilder(conf: SQLConf) extends SqlBaseBaseVisitor[AnyRef] with Logging
     }
     if (ctx.identifier != null &&
         ctx.identifier.getText.toLowerCase(Locale.ROOT) != "noscan") {
-      throw new ParseException(s"Expected `NOSCAN` instead of `${ctx.identifier.getText}`", ctx)
+      throw new ParseException(s"Expected `NOSCAN` instead of `${ctx.identifier.getText}`",
+        ctx.identifier())
     }
 
     val tableName = visitMultipartIdentifier(ctx.multipartIdentifier())