Align coverage.txt with 12e8666

Running `bundle exec rake` on fe8b6f2
produced these changes in `coverage.txt` (despite there being no changes
in my working directory).

It seems that 12e8666 removed 3 lines
from `base.rb` which meant the line numbers in the coverage report were
off by three for that file.

coverage/coverage.txt

@@ -3,7 +3,7 @@ Incomplete test coverage
 --------------------------------------------------------------------------------
 
 /app/controllers/view_components_controller.rb: 97.22% (missed: 49)
-/lib/view_component/base.rb: 97.86% (missed: 181,268,296,359)
+/lib/view_component/base.rb: 97.86% (missed: 178,265,293,356)
 /lib/view_component/preview.rb: 92.31% (missed: 32,42,78)
 /lib/view_component/render_to_string_monkey_patch.rb: 83.33% (missed: 9)
 /lib/view_component/test_helpers.rb: 95.45% (missed: 17)