fix: do not mutate user-defined "X-Request-Id" request header (#2110)

Author: kettanaito

package.json

@@ -125,7 +125,7 @@
     "@bundled-es-modules/statuses": "^1.0.1",
     "@inquirer/confirm": "^3.0.0",
     "@mswjs/cookies": "^1.1.0",
-    "@mswjs/interceptors": "^0.25.16",
+    "@mswjs/interceptors": "^0.26.12",
     "@open-draft/until": "^2.1.0",
     "@types/cookie": "^0.6.0",
     "@types/statuses": "^2.0.4",