Change mobile breakpoint back to old version and allow main column to shrink (#32033)

app/javascript/mastodon/features/ui/components/columns_area.jsx

@@ -62,7 +62,7 @@ export default class ColumnsArea extends ImmutablePureComponent {
   };
 
   // Corresponds to (max-width: $no-gap-breakpoint - 1px) in SCSS
-  mediaQuery = 'matchMedia' in window && window.matchMedia('(max-width: 1206px)');
+  mediaQuery = 'matchMedia' in window && window.matchMedia('(max-width: 1174px)');
 
   state = {
     renderComposePanel: !(this.mediaQuery && this.mediaQuery.matches),

app/javascript/styles/mastodon/components.scss

@@ -2708,7 +2708,7 @@ a.account__display-name {
     &__main {
       box-sizing: border-box;
       width: 100%;
-      flex: 0 0 auto;
+      flex: 0 1 auto;
       display: flex;
       flex-direction: column;
 

app/javascript/styles/mastodon/variables.scss

@@ -87,7 +87,7 @@ $media-modal-media-max-width: 100%;
 // put margins on top and bottom of image to avoid the screen covered by image.
 $media-modal-media-max-height: 80%;
 
-$no-gap-breakpoint: 1207px;
+$no-gap-breakpoint: 1175px;
 $mobile-breakpoint: 630px;
 
 $font-sans-serif: 'mastodon-font-sans-serif' !default;