Use Permissions.ViewContent for GetEndpoint

[infofromca]

Describe the bug

To Reproduce

Steps to reproduce the behavior:

1. Go to 'Content GET API'

2. See error
   DIFF PERMISSION in whole site

Expected behavior

tHIS GET API SHOULD HAVE THE SAME PERMISSION AS 👍 public async Task Display(string contentItemId, string jsonPath)
{
var contentItem = await _contentManager.GetAsync(contentItemId, jsonPath);

if (contentItem == null)
{
    return NotFound();
}

if (!await _authorizationService.AuthorizeAsync(User, **_CommonPermissions.ViewContent_**, contentItem))
{
    return this.ChallengeOrForbid();
}

var model = await _contentItemDisplayManager.BuildDisplayAsync(contentItem, this);

return View(model);

}

[MikeAlhayek]

Not really. We use both permissions. First we make sure you have permission to access the API. Then we check to see if you have permission to view the requested content item.