[JENKINS-56114] Correct behavior for Windows Server 2016 with Docker (#3914)

* [JENKINS-56114] Correct behavior for Windows Server 2016 with Docker
- also adjust the symlink escape hatch

* Correct missing space + retrigger build

* Improve performance with a check on the logger level

* Run the specific code only under Windows

* Rename the method as it's used only for Windows

(cherry picked from commit 5562b2fe)