Make additions to group/project issues list refactor

What does this MR do and why?

This MR makes additions to the group/project issues list Vue refactor (#322755 (closed)), behind the feature flag vue_issues_list defaulted off.

• Disable anonymous searching when disable_anonymous_search ops feature flag is enabled (this currently happens on the existing Haml issues list)
• Show issues list errors below filtered search bar (as decided by UX in #323743 (comment 752276275))
• Sort filtered search tokens alphabetically (as decided by UX in https://gitlab.slack.com/archives/CGR5T3WMP/p1639451925134400?thread_ts=1639444233.130100&cid=CGR5T3WMP)
• Fix sort parameter values (will fix spec/features/projects/labels/issues_sorted_by_priority_spec.rb when vue_issues_list is enabled in the feature specs)

Screenshots or screen recordings

anonymous searching	issues list error message	alphabetical tokens

How to set up and validate locally

1. In rails console enable the feature flags

   Feature.enable(:vue_issues_list)
   Feature.enable(:disable_anonymous_search)

2. Visit any group or project issues list page such as http://127.0.0.1:3000/groups/h5bp/-/issues
3. Test the MR

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #322755 (closed)