Add source-mapped stacktrace to error message in web UI (#13082)

* Add source-mapped stack trace to copyable text in error boundary

* Add the error message to the copied report, not only the stack trace

package.json

@@ -153,6 +153,7 @@
     "rimraf": "^3.0.2",
     "sass": "^1.25.0",
     "sass-loader": "^8.0.2",
+    "stacktrace-js": "^2.0.2",
     "stringz": "^2.0.0",
     "substring-trie": "^1.0.2",
     "terser-webpack-plugin": "^2.3.5",