[INT-324] update regions in TS integration tests

Author: perf2711

tests/env-vars-build-id.spec.ts

@@ -3,7 +3,7 @@ import { RE_VISUAL_BUILD_ID, SAUCE_VISUAL_BUILD_NAME } from './utils/helpers';
 import { execute } from './utils/process';
 import { FileHandle } from 'fs/promises';
 
-const region = 'us-west-1' as SauceRegion;
+const region = (process.env.SAUCE_REGION ?? 'us-west-1') as SauceRegion;
 
 const visualApi = getApi({
   region,

tests/env-vars-custom-id.spec.ts

@@ -7,7 +7,7 @@ import { execute } from './utils/process';
 import { FileHandle } from 'fs/promises';
 import { randomBytes } from 'crypto';
 
-const region = 'us-west-1' as SauceRegion;
+const region = (process.env.SAUCE_REGION ?? 'us-west-1') as SauceRegion;
 
 const visualApi = getApi({
   region,

tests/env-vars-unlinked-custom-id.spec.ts

@@ -9,7 +9,7 @@ import { execute } from './utils/process';
 import { FileHandle } from 'fs/promises';
 import { randomBytes } from 'crypto';
 
-const region = 'us-west-1' as SauceRegion;
+const region = (process.env.SAUCE_REGION ?? 'us-west-1') as SauceRegion;
 
 const visualApi = getApi({
   region,

tests/env-vars.spec.ts

@@ -11,7 +11,7 @@ import {
 import { execute } from './utils/process';
 import { FileHandle } from 'fs/promises';
 
-const region = 'us-west-1' as SauceRegion;
+const region = (process.env.SAUCE_REGION ?? 'us-west-1') as SauceRegion;
 
 const visualApi = getApi({
   region,