Add a missing description for text selection of nyanology

Summary:
When nyanology has text selection, it produces an error message
every second.
@fix

Test Plan:
1. Set theme as "nyanology"
2. Set a text selection.
3. See error messages.

Reviewers: raster

Differential Revision: https://phab.enlightenment.org/D4327

data/themes/nyanology/nyanology.edc

@@ -903,6 +903,10 @@ target: "0.clip"; target: "1.clip"; target: "2.clip"; target: "3.clip"; target:
                }
                color: OUTCOL;
             }
+            description { state: "pulse" 0.0;
+               inherit: "default" 0.0;
+               color: OUTCOL2;
+            }
          }
          program { name: "bottomfull";
             signal: "mode,bottomfull";