fix rails main (#2074)

Author: joelhawksley

test/sandbox/test/rendering_test.rb

@@ -564,7 +564,8 @@ def test_backtrace_returns_correct_file_and_line_number
         render_inline(ExceptionInTemplateComponent.new)
       end
 
-    assert_match %r{app/components/exception_in_template_component\.html\.erb:2}, error.backtrace[0]
+    component_error_index = (Rails::VERSION::STRING < "8.0") ? 0 : 1
+    assert_match %r{app/components/exception_in_template_component\.html\.erb:2}, error.backtrace[component_error_index]
   end
 
   def test_render_collection