Use timestamp IDs for mute rules

db/migrate/20211222165159_create_mute_rules.rb

@@ -6,5 +6,7 @@ class CreateMuteRules < ActiveRecord::Migration[5.2]
 
       t.timestamps
     end
+
+    change_column(:mute_rules, :id, :bigint, default: -> { "gen_timestamp_id('mute_rules'::text)" })
   end
 end

db/schema.rb

@@ -107,7 +107,7 @@ ActiveRecord::Schema.define(version: 2021_12_28_135426) do
     t.index ["user_id"], name: "index_moderation_votes_on_user_id"
   end
 
-  create_table "mute_rules", force: :cascade do |t|
+  create_table "mute_rules", id: :bigint, default: -> { "gen_timestamp_id('mute_rules'::text)" }, force: :cascade do |t|
     t.bigint "user_id"
     t.string "muted_phrase"
     t.datetime "created_at", null: false