🎨(react) make eof stylesheets consistent

Some older tools misbehave if the last line of data
in a text file is not terminated with a newline.
It makes sure the last line was properly terminated.

packages/react/src/components/Loader/index.scss

@@ -31,4 +31,4 @@
   50%  {clip-path:polygon(50% 50%,0 0,100% 0,100% 100%,100% 100%,100% 100%)}
   75%  {clip-path:polygon(50% 50%,0 0,100% 0,100% 100%,0 100%,0 100%)}
   100% {clip-path:polygon(50% 50%,0 0,100% 0,100% 100%,0 100%,0 0)}
-}
+}