Fixes navigation gradients mixins to prevent them from compiling directly to ink.css.
Fixes navigation gradients mixins to prevent them from compiling directly to ink.css.

pkdevbox/Ink,birthdayalex/Ink,Anmo/Ink,birthdayalex/Ink,rcarmo/Ink,sapo/Ink,birthdayalex/Ink,rcarmo/Ink,pedrocorreia/Ink,sapo/Ink,rcarmo/Ink,pkdevbox/Ink,mubassirhayat/Ink,pedrocorreia/Ink,Anmo/Ink,mubassirhayat/Ink,pedrocorreia/Ink,sapo/Ink,Anmo/Ink,pkdevbox/Ink