Add truthy rawQuery as we are interpolating raw query only (#25110)

public/app/plugins/datasource/mssql/datasource.ts

@@ -55,6 +55,7 @@ export class MssqlDatasource {
           ...query,
           datasource: this.name,
           rawSql: this.templateSrv.replace(query.rawSql, scopedVars, this.interpolateVariable),
+          rawQuery: true,
         };
         return expandedQuery;
       });

public/app/plugins/datasource/mysql/datasource.ts

@@ -56,6 +56,7 @@ export class MysqlDatasource {
           ...query,
           datasource: this.name,
           rawSql: this.templateSrv.replace(query.rawSql, scopedVars, this.interpolateVariable),
+          rawQuery: true,
         };
         return expandedQuery;
       });

public/app/plugins/datasource/postgres/datasource.ts

@@ -61,6 +61,7 @@ export class PostgresDatasource {
           ...query,
           datasource: this.name,
           rawSql: this.templateSrv.replace(query.rawSql, scopedVars, this.interpolateVariable),
+          rawQuery: true,
         };
         return expandedQuery;
       });