Emoji consistency for monospace (e.g. EasyMDE)

Author: CL-Jeremy

web_src/less/_base.less

@@ -1,7 +1,7 @@
 :root {
   /* documented customizable variables */
   --fonts-proportional: -apple-system, "Segoe UI", system-ui, "Roboto", "Helvetica Neue", "Arial", "Noto Sans", "Liberation Sans";
-  --fonts-monospace: "SFMono-Regular", "Menlo", "Monaco", "Consolas", "Liberation Mono", "Courier New", monospace;
+  --fonts-monospace: "SFMono-Regular", "Menlo", "Monaco", "Consolas", "Liberation Mono", "Courier New", monospace, var(--fonts-emoji);
   --fonts-emoji: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", "Twemoji Mozilla";
   /* other variables */
   --fonts-regular: var(--fonts-proportional), var(--fonts-emoji), sans-serif;