fix sample issue (Azure#25098)

fix： Azure#25076

Author: kazrael2119

sdk/devcenter/developer-devcenter-rest/samples-dev/sampleCreateDevBox.ts

@@ -8,6 +8,8 @@ import {
   paginate,
 } from "@azure-rest/developer-devcenter";
 import createClient from "@azure-rest/developer-devcenter";
+import * as dotenv from "dotenv";
+dotenv.config();
 
 /**
  * @summary Demonstrates creating, accessing, and deleting a Dev Box

sdk/devcenter/developer-devcenter-rest/samples-dev/sampleCreateEnvironment.ts

@@ -9,6 +9,8 @@ import {
   paginate,
 } from "@azure-rest/developer-devcenter";
 import createClient from "@azure-rest/developer-devcenter";
+import * as dotenv from "dotenv";
+dotenv.config();
 
 /**
  * @summary Demonstrates creating, fetching outputs from, and deleting an Environment

sdk/devcenter/developer-devcenter-rest/samples/v1-beta/javascript/sampleCreateDevBox.js

@@ -1,6 +1,7 @@
 const { DefaultAzureCredential } = require("@azure/identity");
 const { isUnexpected, getLongRunningPoller, paginate } = require("@azure-rest/developer-devcenter");
 const createClient = require("@azure-rest/developer-devcenter").default;
+require("dotenv").config();
 
 /**
  * @summary Demonstrates creating, accessing, and deleting a Dev Box

sdk/devcenter/developer-devcenter-rest/samples/v1-beta/javascript/sampleCreateEnvironment.js

@@ -1,6 +1,7 @@
 const { DefaultAzureCredential } = require("@azure/identity");
 const { isUnexpected, getLongRunningPoller, paginate } = require("@azure-rest/developer-devcenter");
 const createClient = require("@azure-rest/developer-devcenter").default;
+require("dotenv").config();
 
 /**
  * @summary Demonstrates creating, fetching outputs from, and deleting an Environment

sdk/devcenter/developer-devcenter-rest/samples/v1-beta/typescript/src/sampleCreateDevBox.ts

@@ -8,6 +8,8 @@ import {
   paginate,
 } from "@azure-rest/developer-devcenter";
 import createClient from "@azure-rest/developer-devcenter";
+import * as dotenv from "dotenv";
+dotenv.config();
 
 /**
  * @summary Demonstrates creating, accessing, and deleting a Dev Box

sdk/devcenter/developer-devcenter-rest/samples/v1-beta/typescript/src/sampleCreateEnvironment.ts

@@ -9,6 +9,8 @@ import {
   paginate,
 } from "@azure-rest/developer-devcenter";
 import createClient from "@azure-rest/developer-devcenter";
+import * as dotenv from "dotenv";
+dotenv.config();
 
 /**
  * @summary Demonstrates creating, fetching outputs from, and deleting an Environment

sdk/devcenter/developer-devcenter-rest/samples/v1/javascript/sampleCreateDevBox.js

@@ -1,6 +1,7 @@
 const { DefaultAzureCredential } = require("@azure/identity");
 const { isUnexpected, getLongRunningPoller } = require("@azure-rest/developer-devcenter");
 const createClient = require("@azure-rest/developer-devcenter").default;
+require("dotenv").config();
 
 /**
  * @summary Demonstrates creating, accessing, and deleting a Dev Box

sdk/devcenter/developer-devcenter-rest/samples/v1/javascript/sampleCreateEnvironment.js

@@ -1,6 +1,7 @@
 const { DefaultAzureCredential } = require("@azure/identity");
 const { isUnexpected, getLongRunningPoller } = require("@azure-rest/developer-devcenter");
 const createClient = require("@azure-rest/developer-devcenter").default;
+require("dotenv").config();
 
 /**
  * @summary Demonstrates creating, fetching outputs from, and deleting an Environment

sdk/devcenter/developer-devcenter-rest/samples/v1/typescript/src/sampleCreateDevBox.ts

@@ -7,6 +7,8 @@ import {
   getLongRunningPoller,
 } from "@azure-rest/developer-devcenter";
 import createClient from "@azure-rest/developer-devcenter";
+import * as dotenv from "dotenv";
+dotenv.config();
 
 /**
  * @summary Demonstrates creating, accessing, and deleting a Dev Box

sdk/devcenter/developer-devcenter-rest/samples/v1/typescript/src/sampleCreateEnvironment.ts

@@ -8,6 +8,8 @@ import {
   getLongRunningPoller,
 } from "@azure-rest/developer-devcenter";
 import createClient from "@azure-rest/developer-devcenter";
+import * as dotenv from "dotenv";
+dotenv.config();
 
 /**
  * @summary Demonstrates creating, fetching outputs from, and deleting an Environment