Improve performance by avoiding regex construction (#20215)

```ruby
10.times { p /#{FOO}/.object_id }
10.times { p FOO_RE.object_id }
```

1 files changed, 1 insertions, 1 deletions

diff --git a/app/models/featured_tag.rb b/app/models/featured_tag.rb
index debae2212..70f949b6a 100644
--- a/app/models/featured_tag.rb
+++ b/app/models/featured_tag.rb
@@ -17,7 +17,7 @@ class FeaturedTag < ApplicationRecord
   belongs_to :account, inverse_of: :featured_tags
   belongs_to :tag, inverse_of: :featured_tags, optional: true # Set after validation
 
-  validates :name, presence: true, format: { with: /\A(#{Tag::HASHTAG_NAME_RE})\z/i }, on: :create
+  validates :name, presence: true, format: { with: Tag::HASHTAG_NAME_RE }, on: :create
 
   validate :validate_tag_uniqueness, on: :create
   validate :validate_featured_tags_limit, on: :create