Webpack resolve issue if ROOT_DIR is a sub-path of a symlink

[bferguso]

If the ROOT_DIR is within a path that contains a symlink directory, resource resolve fails as the absolute (real) path is different than the symlink path.

For example, in our system, the venv directory is /fs/u02/apps_ux/apps_dlvr/venv. However there is an /apps_ux/ -> /fs/u02/apps_ux/ symlink in the root that causes line 366 in webpack/webpack.common.js to not match:
templatePath = resourcePath.split(APP_ROOT)[1];

An example of this mismatch in our case is as follows:

ROOT_DIR: /apps_ux/apps_dlvr/bcrhp_dlvr_venv/lib64/python3.9/site-packages/arches
Resource:  /fs/u02/apps_ux/apps_dlvr/bcrhp_dlvr_venv/lib/python3.9/site-packages/arches/app/templates/views/components/cards/related-resources-map.htm

Resolving all paths to the real (full path) should fix this issue (eg os.path.realpath(ROOT_DIR)).

[jacobtylerwalls]

Fixed in #10236