Fix infinite loop problem with the NameErrors in block exposures (#355)

* Fix infinite loop problem with the `NameError`s in block exposures

Calling `NameError#message` causes the `did_you_mean` library to endup
being in an infinite loop(Probabaly raises `SystemStackError` at some
point though).

Related to ruby/did_you_mean#158

* Fix rubocop cop violations

Author: meinac

lib/grape_entity/entity.rb

@@ -527,7 +527,7 @@ def exec_with_object(options, &block)
       # it handles: https://github.com/ruby/ruby/blob/v3_0_0_preview1/NEWS.md#language-changes point 3, Proc
       raise Grape::Entity::Deprecated.new e.message, 'in ruby 3.0' if e.is_a?(ArgumentError)
 
-      raise e.class, e.message
+      raise e
     end
 
     def exec_with_attribute(attribute, &block)

spec/grape_entity/entity_spec.rb

@@ -30,9 +30,7 @@
 
         it 'makes sure that :format_with as a proc cannot be used with a block' do
           # rubocop:disable Style/BlockDelimiters
-          # rubocop:disable Lint/EmptyBlock
           expect { subject.expose :name, format_with: proc {} do p 'hi' end }.to raise_error ArgumentError
-          # rubocop:enable Lint/EmptyBlock
           # rubocop:enable Style/BlockDelimiters
         end
 
@@ -1137,6 +1135,18 @@ class Parent < Person
             expect(representation).to eq(id: nil, name: nil, user: { id: nil, name: nil, email: nil })
           end
         end
+
+        context 'when NameError happens in a parameterized block_exposure' do
+          before do
+            subject.expose :raise_no_method_error do |_|
+              foo
+            end
+          end
+
+          it 'does not cause infinite loop' do
+            expect { subject.represent({}, serializable: true) }.to raise_error(NameError)
+          end
+        end
       end
     end
 
@@ -1581,7 +1591,7 @@ class NoPathCharacterEntity < Grape::Entity
           end
 
           fresh_class.class_eval do
-            expose :characteristics, using: EntitySpec::NoPathCharacterEntity, attr_path: proc { nil }
+            expose :characteristics, using: EntitySpec::NoPathCharacterEntity, attr_path: proc {}
           end
 
           expect(subject.serializable_hash).to eq(