Enable more frozen string in app/models/**/*.rb

Partially addresses #47424.

app/models/concerns/presentable.rb

+# frozen_string_literal: true
+
 module Presentable
   extend ActiveSupport::Concern

app/models/concerns/project_features_compatibility.rb

+# frozen_string_literal: true
+
 # Makes api V4 compatible with old project features permissions methods
 #
 # After migrating issues_enabled merge_requests_enabled builds_enabled snippets_enabled and wiki_enabled

app/models/concerns/prometheus_adapter.rb

+# frozen_string_literal: true
+
 module PrometheusAdapter
   extend ActiveSupport::Concern

app/models/concerns/protected_branch_access.rb

+# frozen_string_literal: true
+
 module ProtectedBranchAccess
   extend ActiveSupport::Concern

app/models/concerns/protected_ref.rb

+# frozen_string_literal: true
+
 module ProtectedRef
   extend ActiveSupport::Concern

app/models/concerns/protected_ref_access.rb

+# frozen_string_literal: true
+
 module ProtectedRefAccess
   extend ActiveSupport::Concern

app/models/concerns/protected_tag_access.rb

+# frozen_string_literal: true
+
 module ProtectedTagAccess
   extend ActiveSupport::Concern

app/models/concerns/reactive_caching.rb

+# frozen_string_literal: true
+
 # The ReactiveCaching concern is used to fetch some data in the background and
 # store it in the Rails cache, keeping it up-to-date for as long as it is being
 # requested.  If the data hasn't been requested for +reactive_cache_lifetime+,

app/models/concerns/reactive_service.rb

+# frozen_string_literal: true
+
 module ReactiveService
   extend ActiveSupport::Concern

app/models/concerns/redis_cacheable.rb

+# frozen_string_literal: true
+
 module RedisCacheable
   extend ActiveSupport::Concern
   include Gitlab::Utils::StrongMemoize

app/models/concerns/referable.rb

+# frozen_string_literal: true
+
 # == Referable concern
 #
 # Contains functionality related to making a model referable in Markdown, such

app/models/concerns/relative_positioning.rb

+# frozen_string_literal: true
+
 module RelativePositioning
   extend ActiveSupport::Concern

app/models/concerns/resolvable_discussion.rb

+# frozen_string_literal: true
+
 module ResolvableDiscussion
   extend ActiveSupport::Concern
   include ::Gitlab::Utils::StrongMemoize

app/models/concerns/resolvable_note.rb

+# frozen_string_literal: true
+
 module ResolvableNote
   extend ActiveSupport::Concern

app/models/concerns/routable.rb

+# frozen_string_literal: true
+
 # Store object full path in separate table for easy lookup and uniq validation
 # Object must have name and path db fields and respond to parent and parent_changed? methods.
 module Routable

app/models/concerns/select_for_project_authorization.rb

+# frozen_string_literal: true
+
 module SelectForProjectAuthorization
   extend ActiveSupport::Concern

app/models/concerns/sha_attribute.rb

+# frozen_string_literal: true
+
 module ShaAttribute
   extend ActiveSupport::Concern

app/models/concerns/sortable.rb

+# frozen_string_literal: true
+
 # == Sortable concern
 #
 # Set default scope for ordering objects

app/models/concerns/spammable.rb

+# frozen_string_literal: true
+
 module Spammable
   extend ActiveSupport::Concern

app/models/concerns/storage/legacy_namespace.rb

+# frozen_string_literal: true
+
 module Storage
   module LegacyNamespace
     extend ActiveSupport::Concern