ci(workflow): enable test trace again (#50817)

### What?

Another attempt to #50619 and WEB-1150, trying to apply setup guard more throughly.

I still do not know why original PR passed CI but fails to subsequent PRs after merge, but hope this could be a right guard to prevent unexpected failures.

.github/workflows/build_and_test.yml

@@ -22,6 +22,8 @@ env:
   # we build a dev binary for use in CI so skip downloading
   # canary next-swc binaries in the monorepo
   NEXT_SKIP_NATIVE_POSTINSTALL: 1
+  DATADOG_API_KEY: ${{ secrets.DATA_DOG_API_KEY }}
+  DD_ENV: 'ci'
   TEST_TIMINGS_TOKEN: ${{ secrets.TEST_TIMINGS_TOKEN }}
   NEXT_TEST_JOB: 1
 

.github/workflows/build_reusable.yml

@@ -44,6 +44,8 @@ env:
   # we build a dev binary for use in CI so skip downloading
   # canary next-swc binaries in the monorepo
   NEXT_SKIP_NATIVE_POSTINSTALL: 1
+  DATADOG_API_KEY: ${{ secrets.DATA_DOG_API_KEY }}
+  DD_ENV: 'ci'
   TEST_TIMINGS_TOKEN: ${{ secrets.TEST_TIMINGS_TOKEN }}
   NEXT_TEST_JOB: 1
 

package.json

@@ -137,7 +137,7 @@
     "critters": "0.0.6",
     "cross-env": "6.0.3",
     "cross-spawn": "6.0.5",
-    "dd-trace": "2.3.0",
+    "dd-trace": "4.1.0",
     "es5-ext": "0.10.53",
     "escape-string-regexp": "2.0.0",
     "eslint": "7.24.0",