Fix posts when omitting quote policy and default policy is nobody (#36158)

app/controllers/concerns/api/interaction_policies_concern.rb

@@ -6,15 +6,13 @@ module Api::InteractionPoliciesConcern
   def quote_approval_policy
     return nil unless Mastodon::Feature.outgoing_quotes_enabled?
 
-    case status_params[:quote_approval_policy]
+    case status_params[:quote_approval_policy].presence || current_user.setting_default_quote_policy
     when 'public'
       Status::QUOTE_APPROVAL_POLICY_FLAGS[:public] << 16
     when 'followers'
       Status::QUOTE_APPROVAL_POLICY_FLAGS[:followers] << 16
     when 'nobody'
       0
-    when nil
-      Status::QUOTE_APPROVAL_POLICY_FLAGS[current_user.setting_default_quote_policy&.to_sym] << 16
     else
       # TODO: raise more useful message
       raise ActiveRecord::RecordInvalid