adjust max-width for emoji picker to new 1280px 3-col width

1280px is a pretty common screen width for several resolutions
(1280x720, 1280x800, 1280x1024, etc.). Since it is only 20px less than
the current 1300px minimum, this shouldn't be a big issue to lower the
minimum screen width for the 3-column layout to 1280px.

Closes: AkkomaGang/pleroma-fe#255

src/components/emoji_picker/emoji_picker.scss

@@ -7,7 +7,7 @@
     overflow: hidden;
     left: -70%;
     max-width: 100%;
-    @media (min-width: 800px) and (max-width: 1300px) {
+    @media (min-width: 800px) and (max-width: 1280px) {
       left: -50%;
       min-width: 50%;
       max-width: 130%;

src/modules/interface.js

@@ -186,7 +186,7 @@ const interfaceMod = {
       if (thirdColumnMode === 'none' || !rootState.users.currentUser) {
         commit('setLayoutType', normalOrMobile)
       } else {
-        const wideLayout = width >= 1300
+        const wideLayout = width >= 1280
         commit('setLayoutType', wideLayout ? 'wide' : normalOrMobile)
       }
     },