Broken symlinks in QtWebEngine 5.14.0

Running export tool fails when exporting QtWebEngine sources after 5.14.0 integration and it seems it's caused by broken symlinks.

Snippet of symbolic link list from some earlier integration:

<snip>

/src/3rdparty/chromium/third_party/devtools-node-modules/third_party/node_modules/acorn-jsx/node_modules/.bin/acorn -> ../acorn/bin/acorn
./src/3rdparty/chromium/third_party/devtools-node-modules/third_party/node_modules/.bin/which -> ../which/bin/which
./src/3rdparty/chromium/third_party/devtools-node-modules/third_party/node_modules/.bin/eslint -> ../eslint/bin/eslint.js
./src/3rdparty/chromium/third_party/devtools-node-modules/third_party/node_modules/.bin/rimraf -> ../rimraf/bin.js

</snip>

Snippet from latest Qt 5.14.0 integration:

<snip>

./src/3rdparty/chromium/third_party/devtools-node-modules/third_party/node_modules/.bin/which -> #!/bin/sh\nbasedir=$(dirname\ \"$(echo\ \"$0\"\ |\ sed\ -e\ 's,\\\\,/,g')\")\n\ncase\ `uname`\ in\n\ \ \ \ CYGWIN)\ basedir=`cygpath\ -w\ \"$basedir\"`;;\nesac\n\nif\ [\ -x\ \"$basedir/node\"\ ];\ then\n\ \ \"$basedir/node\"\ \ \"$basedir/../which/bin/which\"\ \"$@\"\n\ \ ret=$?\nelse\ \n\ \ node\ \ \"$basedir/../which/bin/which\"\ \"$@\"\n\ \ ret=$?\nfi\nexit\ $ret\n

./src/3rdparty/chromium/third_party/devtools-node-modules/third_party/node_modules/.bin/eslint -> #!/bin/sh\nbasedir=$(dirname\ \"$(echo\ \"$0\"\ |\ sed\ -e\ 's,\\\\,/,g')\")\n\ncase\ `uname`\ in\n\ \ \ \ CYGWIN)\ basedir=`cygpath\ -w\ \"$basedir\"`;;\nesac\n\nif\ [\ -x\ \"$basedir/node\"\ ];\ then\n\ \ \"$basedir/node\"\ \ \"$basedir/../eslint/bin/eslint.js\"\ \"$@\"\n\ \ ret=$?\nelse\ \n\ \ node\ \ \"$basedir/../eslint/bin/eslint.js\"\ \"$@\"\n\ \ ret=$?\nfi\nexit\ $ret\n

</snip>