InfluxDB SQL: Fix sql query template variable interpolation (#78557)

interpolate sql too

public/app/plugins/datasource/influxdb/datasource.ts

@@ -182,7 +182,7 @@ export default class InfluxDatasource extends DataSourceWithBackend<InfluxQuery,
       };
     }
 
-    if (this.isMigrationToggleOnAndIsAccessProxy()) {
+    if (this.version === InfluxVersion.SQL || this.isMigrationToggleOnAndIsAccessProxy()) {
       query = this.applyVariables(query, rest);
       if (query.adhocFilters?.length) {
         const adhocFiltersToTags: InfluxQueryTag[] = (query.adhocFilters ?? []).map((af) => {