Add a few more weird code patterns to the interesting backtrace helper

spec/datadog/profiling/collectors/interesting_backtrace_helper.rb

@@ -174,8 +174,27 @@ def hello
   end
 end
 
+def ibh_subclass_of_anonymous_class
+  c1 = Class.new(Array)
+  c2 = Class.new(c1) do
+    def hello
+      [nil].map { IbhClassN.new.hello }.first
+    end
+  end
+
+  c2.new.hello
+end
+
+module IbhModuleO
+  module_function
+
+  def hello
+    ibh_subclass_of_anonymous_class
+  end
+end
+
 def ibh_top_level_hello
-  IbhClassN.new.hello
+  IbhModuleO.hello
 end
 
 1.times {

spec/datadog/profiling/collectors/stack_spec.rb

@@ -186,11 +186,9 @@ def call_sleep
       end
       # rubocop:enable Style/GlobalVars
 
-      it 'matches the Ruby backtrace API' do
+      # I opted to join these two expects to avoid running the `load` above more than once
+      it 'matches the Ruby backtrace API has has a sleeping frame at the top of the stack' do
         expect(gathered_stack).to eq reference_stack
-      end
-
-      it 'has a sleeping frame at the top of the stack' do
         expect(reference_stack.first).to match(hash_including(base_label: 'sleep'))
       end
     end