[ts] Remove unnecessary @ts-nocheck from sources/ScriptOriginPlugin.js
[ts] Remove unnecessary @ts-nocheck from sources/ScriptOriginPlugin.js

TBR=aerotwist@chromium.org

Bug: chromium:1011811
Change-Id: I41aa9dc722aad621be2eac20ff61694c8ae32fee
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2404650
Reviewed-by: Simon Zünd <38944668e9e2ca98ccd0275b53370f90fa55c113@chromium.org>
Commit-Queue: Simon Zünd <38944668e9e2ca98ccd0275b53370f90fa55c113@chromium.org>

ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend