NoMethodError: undefined method `content_tag' for MarkupHelper:Module

https://sentry.gitlap.com/gitlab/gitlabcom/issues/30525/

NoMethodError: undefined method `content_tag' for MarkupHelper:Module
Did you mean?  const_get
  app/helpers/markup_helper.rb:121:in `markup_unsafe'
    content_tag :pre, class: 'plain-readme' do
  app/models/repository.rb:533:in `rendered_readme'
    MarkupHelper.markup_unsafe(readme.name, readme.data, project: project) if readme
  lib/gitlab/metrics/instrumentation.rb:156:in `block in _uncached_rendered_readme'
    trans.method_call_for(#{label.to_sym.inspect}).measure { super }
  lib/gitlab/metrics/method_call.rb:23:in `measure'
    retval = yield
  lib/gitlab/metrics/instrumentation.rb:156:in `_uncached_rendered_readme'
    trans.method_call_for(#{label.to_sym.inspect}).measure { super }
...
(66 additional frame(s) were not displayed)

undefined method `content_tag' for MarkupHelper:Module
Did you mean?  const_get

/cc @to1ne

added Next Patch Release regression labels

changed milestone to %9.2

assigned to @to1ne

mentioned in merge request !11506 (merged)

closed via merge request !11506 (merged)

mentioned in commit a3eabcc2

mentioned in issue #32437 (closed)

mentioned in commit d3cc3516