fix: add missing selected time range variables (#5714)

frontend/src/api/dashboard/variables/dashboardVariablesQuery.ts

@@ -1,6 +1,8 @@
 import { ApiV2Instance as axios } from 'api';
 import { ErrorResponseHandler } from 'api/ErrorResponseHandler';
 import { AxiosError } from 'axios';
+import getStartEndRangeTime from 'lib/getStartEndRangeTime';
+import store from 'store';
 import { ErrorResponse, SuccessResponse } from 'types/api';
 import {
 	Props,
@@ -11,7 +13,26 @@ const dashboardVariablesQuery = async (
 	props: Props,
 ): Promise<SuccessResponse<VariableResponseProps> | ErrorResponse> => {
 	try {
-		const response = await axios.post(`/variables/query`, props);
+		const { globalTime } = store.getState();
+		const { start, end } = getStartEndRangeTime({
+			type: 'GLOBAL_TIME',
+			interval: globalTime.selectedTime,
+		});
+
+		const timeVariables: Record<string, number> = {
+			start_timestamp_ms: parseInt(start, 10) * 1e3,
+			end_timestamp_ms: parseInt(end, 10) * 1e3,
+			start_timestamp_nano: parseInt(start, 10) * 1e9,
+			end_timestamp_nano: parseInt(end, 10) * 1e9,
+			start_timestamp: parseInt(start, 10),
+			end_timestamp: parseInt(end, 10),
+		};
+
+		const payload = { ...props };
+
+		payload.variables = { ...payload.variables, ...timeVariables };
+
+		const response = await axios.post(`/variables/query`, payload);
 
 		return {
 			statusCode: 200,