Fix warning about already defined constant in resource table specs

spec/components/alchemy/admin/resource/action_spec.rb

@@ -2,13 +2,12 @@
 
 require "rails_helper"
 
-CustomResource = Struct.new(:name, :description)
-
 RSpec.describe Alchemy::Admin::Resource::Action, type: :component do
   let(:name) { nil }
   let(:tooltip) { nil }
   let(:block) { lambda { |item| "Foo" } }
-  let(:resource) { CustomResource.new("Foo", "Bar") }
+  let(:custom_resource) { Struct.new(:name, :description) }
+  let(:resource) { custom_resource.new("Foo", "Bar") }
   let(:component) { described_class.new(name, tooltip, &block) }
 
   subject(:render) do

spec/components/alchemy/admin/resource/cell_spec.rb

@@ -2,12 +2,11 @@
 
 require "rails_helper"
 
-CustomResource = Struct.new(:name, :description)
-
 RSpec.describe Alchemy::Admin::Resource::Cell, type: :component do
   let(:css_classes) { "foo bar" }
   let(:block) { lambda { |item| "Foo" } }
-  let(:resource) { CustomResource.new("Foo", "Bar") }
+  let(:custom_resource) { Struct.new(:name, :description) }
+  let(:resource) { custom_resource.new("Foo", "Bar") }
   let(:component) { described_class.new(css_classes, &block) }
 
   subject(:render) do

spec/components/alchemy/admin/resource/table_spec.rb

@@ -2,8 +2,6 @@
 
 require "rails_helper"
 
-CustomResource = Struct.new(:name, :description)
-
 RSpec.describe Alchemy::Admin::Resource::Table, type: :component do
   let(:collection) { [] }
   let(:component) { described_class.new(collection) }
@@ -15,10 +13,12 @@
   end
 
   context "with data" do
+    let(:custom_resource) { Struct.new(:name, :description) }
+
     let(:collection) {
       [
-        CustomResource.new("Foo", "Awesome description"),
-        CustomResource.new("Bar", "Another description")
+        custom_resource.new("Foo", "Awesome description"),
+        custom_resource.new("Bar", "Another description")
       ]
     }