QP-8393 Fix wrong StopIndex on emitDot (#80)

MySQL Lex 과정에서, emitDot (앞에 붙은 .을 별도 토큰으로 분리) 할 때
identifier의 StopIndex가 잘못 설정되는 문제를 해결합니다.

이를 통해 다음과 같은 쿼리의 InfferedName이 잘못 추론되지 않도록 수정합니다.
```sql
SELECT @@GLOBAL.character_set_server,@@GLOBAL.collation_server;

-- old inffered name:
-- @@GLOBAL.character_set_server, // (뒤에 ,가 붙음)
-- @@GLOBAL.collation_server

-- new inferred name:
-- @@GLOBAL.character_set_server
-- @@GLOBAL.collation_server
```

Qsi.MySql/Internal/MySqlBaseLexer.cs

@@ -193,7 +193,7 @@ protected void emitDot()
             Text[1..],
             Channel,
             TokenStartCharIndex + 1,
-            TokenStartCharIndex + Text.Length,
+            TokenStartCharIndex + Text.Length - 1,
             TokenStartLine,
             TokenStartColumn);
 

Qsi.Tests/Vendor/MySql/MySqlTest.Data.cs

@@ -95,7 +95,6 @@ public partial class MySqlTest
         new("SELECT actor_id IN (`actor_id`) FROM actor LIMIT 1", new[] { "actor_id IN (`actor_id`)" }),
         new("SELECT (actor_id IN (`actor_id`)) FROM actor LIMIT 1", new[] { "(actor_id IN (`actor_id`))" }),
 
-
         new("SELECT actor_id, first_name FROM actor LIMIT 1;", new[] { "actor_id", "first_name" }),
         new("SELECT `actor_id`, `first_name` FROM actor LIMIT 1;", new[] { "actor_id", "first_name" }),
         new("SELECT (actor_id), (first_name) FROM actor LIMIT 1;", new[] { "actor_id", "first_name" }),
@@ -130,7 +129,6 @@ public partial class MySqlTest
         new("SELECT (2 * 3) | (1 & 7);", new[] { "(2 * 3) | (1 & 7)" }),
         new("SELECT (('A' | 'B') | (1 + 7));", new[] { "(('A' | 'B') | (1 + 7))" }),
 
-
         // PredicateExprIn:         IN_SYMBOL (subquery | OPEN_PAR_SYMBOL exprList CLOSE_PAR_SYMBOL)
         new("SELECT actor_id IN (SELECT actor_id from actor) FROM actor LIMIT 1;", new[] { "actor_id IN (SELECT actor_id from actor)" }),
         new("SELECT actor_id IN (1, 2, 3) FROM actor LIMIT 1;", new[] { "actor_id IN (1, 2, 3)" }),
@@ -172,21 +170,23 @@ public partial class MySqlTest
         new("SELECT f.title, fl.title FROM film AS f JOIN film_list AS fl LIMIT 1;", new[] { "title", "title" }),
         new("SELECT (f.title), (fl.title) FROM film AS f JOIN film_list AS fl LIMIT 1;", new[] { "title", "title" }),
         new("SELECT DISTINCT (f.title), (fl.title) FROM film AS f JOIN film_list AS fl LIMIT 1;", new[] { "title", "title" }),
+
+        new("SELECT @@GLOBAL.character_set_server,@@GLOBAL.collation_server;", new[] { "@@GLOBAL.character_set_server", "@@GLOBAL.collation_server" }),
     };
 
-    private static readonly TestCaseData[] Test_LeadLagInfo_TestDatas = 
+    private static readonly TestCaseData[] Test_LeadLagInfo_TestDatas =
     {
         // QCP-1303 : https://chequer.atlassian.net/browse/QP-5465?focusedCommentId=48962
         new("SELECT LAG(first_name, 4294967295) OVER(ORDER BY actor_id) FROM actor;"),
         new("SELECT LAG(first_name, last_name, 4294967295) OVER(ORDER BY actor_id) FROM actor;"),
         new("SELECT LAG(first_name, IF(TRUE, 2, 1)) OVER(ORDER BY actor_id) FROM actor;"),
         new("SELECT LAG(first_name, IF(TRUE, 2, 1) + IF(FALSE, 2, 1)) OVER(ORDER BY actor_id) FROM actor;"),
-        
+
         new("SELECT LEAD(first_name, 4294967295) OVER(ORDER BY actor_id) FROM actor;"),
         new("SELECT LEAD(first_name, last_name, 4294967295) OVER(ORDER BY actor_id) FROM actor;"),
         new("SELECT LEAD(first_name, IF(TRUE, 2, 1)) OVER(ORDER BY actor_id) FROM actor;"),
         new("SELECT LEAD(first_name, IF(TRUE, 2, 1) + IF(FALSE, 2, 1)) OVER(ORDER BY actor_id) FROM actor;"),
-        
+
         new("SELECT NTILE(4294967295) OVER(ORDER BY actor_id) FROM actor;"),
         new("SELECT NTILE(IF(TRUE, 2, 1)) OVER(ORDER BY actor_id) FROM actor;"),
         new("SELECT NTILE(IF(TRUE, 2, 1) + IF(FALSE, 2, 1)) OVER(ORDER BY actor_id) FROM actor;")