[feature] Always show content warning: use existing glitch feature (#1)

The modifications you made are somewhat janky; for instance, editing a toot with an existing content warning makes the UI look very weird and doesn't quite work.

Glitch already has a feature for this, so simply turn it on by default. This should do the same thing.

Reviewed-on: https://codeberg.org/superseriousbusiness/masto-fe-standalone/pulls/1
Co-authored-by: julia <midnight@trainwit.ch>
Co-committed-by: julia <midnight@trainwit.ch>

app/javascript/flavours/glitch/reducers/compose.js

@@ -30,6 +30,7 @@ import {
   COMPOSE_TAG_HISTORY_UPDATE,
   COMPOSE_ADVANCED_OPTIONS_CHANGE,
   COMPOSE_SENSITIVITY_CHANGE,
+  COMPOSE_SPOILERNESS_CHANGE,
   COMPOSE_SPOILER_TEXT_CHANGE,
   COMPOSE_VISIBILITY_CHANGE,
   COMPOSE_LANGUAGE_CHANGE,
@@ -382,6 +383,15 @@ export default function compose(state = initialState, action) {
 
       map.set('idempotencyKey', uuid());
     });
+  case COMPOSE_SPOILERNESS_CHANGE:
+    return state.withMutations(map => {
+      map.set('spoiler', !state.get('spoiler'));
+      map.set('idempotencyKey', uuid());
+
+      if (!state.get('sensitive') && state.get('media_attachments').size >= 1) {
+        map.set('sensitive', true);
+      }
+    });
   case COMPOSE_SPOILER_TEXT_CHANGE:
     return state
       .set('spoiler_text', action.text)