Merge commit '3b3144740805c1b404934c0f196d6cddc14dac0b' into glitch-soc/merge-upstream

Conflicts:
- `package.json`:
  Conflict due to lines adjacent to the glitch-soc-modified `i18n:extract` one
  were changed, but otherwise no real conflict.
  Ported upstream's changes and kept glitch-soc's `i18n:extract`.
- `tsconfig.json`:
  Upstream's dependencies changed the code style rules for json formatting, and
  we had local changes.
  Kept our changes, but with upstream's formatting/
- `yarn.lock`:
  A dependency textually adjacent to a glitch-soc-only one got changed.
  Applied upstream's change, keeping the glitch-soc-only dependency.

app/javascript/mastodon/test_helpers.tsx

@@ -40,7 +40,7 @@ function render(
   ui: React.ReactElement,
   { locale = 'en', signedIn = true, ...renderOptions } = {},
 ) {
-  const Wrapper = (props: { children: React.ReactElement }) => {
+  const Wrapper = (props: { children: React.ReactNode }) => {
     return (
       <MemoryRouter>
         <IntlProvider locale={locale}>