fix(db): Log mogrified queries

Prior to this, queries passed to `frappe.db.sql` with values looked like:

"SELECT `defkey`,`defvalue` FROM `tabDefaultValue` WHERE `parent`=%(param1)s ORDER BY `creation`"

Now, they'll look "normal" or built like:

"SELECT `defkey`,`defvalue` FROM `tabDefaultValue` WHERE `parent`='__global' ORDER BY `creation`"

(cherry picked from commit b13298d69c)

frappe/database/mariadb/database.py

@@ -190,7 +190,7 @@ class MariaDBDatabase(MariaDBConnectionUtil, MariaDBExceptionUtil, Database):
 		return db_size[0].get("database_size")
 
 	def log_query(self, query, values, debug, explain):
-		self.last_query = self._cursor._last_executed
+		self.last_query = query = self._cursor._last_executed
 		self._log_query(query, debug, explain)
 		return self.last_query