src/nautilus-files-view.c: check if object is in "Starred"

Selecting "Copy to..." from object in "Starred" returned error "The specified location is not supported".

To fix this, I added an if statement to check if the object is in "Starred". If it is, open the file chooser in path "/" instead of trying to open the error-causing URI.

GNOME/nautilus#1243
2 jobs for my_work in 8 minutes and 2 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Test
passed #1214125
flatpak
flatpak devel

00:08:01

failed #1214126
style check

00:01:41

 
Name Stage Failure
failed
style check Test
     }

g_free (uri);
Uploading artifacts for failed job
Uploading artifacts...
uncrustify.diff: found 1 matching files and directories

Uploading artifacts as "archive" to coordinator... ok
id=1214126 responseStatus=201 Created token=5EMvY2R-
Cleaning up file based variables
ERROR: Job failed: exit code 1