[Database] Break out changes to npc_types from parcels (#4295)

* [Database] Break out changes to `npc_types` from parcels

# Description

Breaking out changes to `npc_types` table to its own update since we need to alter the content schema. See #4198.

## Type of change

- [X] Bug fix (non-breaking change which fixes an issue)

# Testing

Clients tested: N/A

# Checklist

- [X] I have tested my changes
- [X] I have performed a self-review of my code. Ensuring variables, functions and methods are named in a human-readable way, comments are added only where naming of variables, functions and methods can't give enough context.
- [X] I own the changes of my code and take responsibility for the potential issues that occur
- [X] If my changes make database schema changes, I have tested the changes on a local database. Updated version.h CURRENT_BINARY_DATABASE_VERSION to the new version.

* Remove extra line

common/database/database_update_manifest.cpp

@@ -5516,9 +5516,6 @@ ALTER TABLE `lootdrop_entries` ADD `content_flags_disabled` varchar(100) NULL;
 				COLLATE='latin1_swedish_ci'
 				ENGINE=InnoDB
 				AUTO_INCREMENT=1;
-
-				ALTER TABLE `npc_types`
-				ADD COLUMN `is_parcel_merchant` TINYINT(1) UNSIGNED NOT NULL DEFAULT '0' AFTER `keeps_sold_items`;
 		)"
 	},
 	ManifestEntry{
@@ -5546,6 +5543,18 @@ ALTER TABLE `character_parcels`
 		.sql = R"(
 ALTER TABLE `doors`
 ADD COLUMN `close_timer_ms` smallint(8) UNSIGNED NOT NULL DEFAULT 5000 AFTER `is_ldon_door`;
+)",
+		.content_schema_update = true
+	},
+	ManifestEntry{
+		.version = 9274,
+		.description = "2024_05_02_parcel_npc_content.sql",
+		.check = "SHOW COLUMNS FROM `npc_types` LIKE 'is_parcel_merchant'",
+		.condition = "empty",
+		.match = "",
+		.sql = R"(
+ALTER TABLE `npc_types`
+ADD COLUMN `is_parcel_merchant` TINYINT(1) UNSIGNED NOT NULL DEFAULT '0' AFTER `keeps_sold_items`;
 )",
 		.content_schema_update = true
 	}

common/version.h

@@ -42,7 +42,7 @@
  * Manifest: https://github.com/EQEmu/Server/blob/master/utils/sql/db_update_manifest.txt
  */
 
-#define CURRENT_BINARY_DATABASE_VERSION 9273
+#define CURRENT_BINARY_DATABASE_VERSION 9274
 #define CURRENT_BINARY_BOTS_DATABASE_VERSION 9043
 
 #endif