Merge branch 'main' into glitch-soc/merge-upstream

Conflicts:
- `app/validators/status_length_validator.rb`:
  Upstream changes too close to glitch-soc MAX_CHARS changes, but not a real
  conflict.
  Applied upstream changes.
- `package.json`:
  glitch-soc-only dependency textually too close to a dependency updated
  upstream, not a real conflict.
  Applied upstream changes.

app/views/about/more.html.haml

@@ -42,7 +42,7 @@
   .column-3
     = render 'application/flashes'
 
-    - if @contents.blank? && (!display_blocks? || @blocks&.empty?)
+    - if @contents.blank? && @rules.empty? && (!display_blocks? || @blocks&.empty?)
       = nothing_here
     - else
       .box-widget