Fix tests for Rails 8.0.0.rc1

[aidanharan]

See https://github.com/rails-sqlserver/activerecord-sqlserver-adapter/actions/runs/11437592629/job/31817408337

Fix:

  2) Failure:
ActiveRecord::PredicateBuilderTest#test_registering_new_handlers_for_joins [/usr/local/bundle/bundler/gems/rails-9a35e63d5203/activerecord/test/cases/relation/predicate_builder_test.rb:29]:
Expected /\[regexp_topic\]\.\[title\] ~ 'rails'/i to match "SELECT [topics].* FROM [topics] INNER JOIN [topics] [regexp_topic] ON [regexp_topic].[id] = [topics].[parent_id] AND [regexp_topic].[title] ~ N'rails' WHERE [topics].[type] IN (N'Reply', N'ReplyWithTitleObject', N'SpecialReply', N'WrongReply', N'UniqueReply', N'SillyUniqueReply')".

  3) Error:
EnumTest#test_0100_declare multiple enums at a time coerced:
NoMethodError: undefined method `original_declare multiple enums at a time' for #<EnumTest:0x00007f75716e8488>
    /usr/local/bundle/bundler/gems/rails-9a35e63d5203/activerecord/lib/active_record/test_fixtures.rb:280:in `method_missing'
    test/cases/coerced_tests.rb:2185:in `block in <class:EnumTest>'

  4) Failure:
ActiveRecord::ConnectionAdapters::RegistrationIsolatedTest#test_0001_#resolve raises if the adapter is using the pre 7.2 adapter registration API [/usr/local/bundle/bundler/gems/rails-9a35e63d5203/activerecord/test/cases/connection_adapters/registration_test.rb:76]:
--- expected
+++ actual
@@ -1 +1 @@
-"Database configuration specifies nonexistent 'fake_legacy' adapter. Available adapters are: abstract, fake, mysql2, postgresql, sqlite3, trilogy. Ensure that the adapter is spelled correctly in config/database.yml and that you've added the necessary adapter gem to your Gemfile if it's not in the list of available adapters."
+"Database configuration specifies nonexistent 'fake_legacy' adapter. Available adapters are: abstract, fake, mysql2, postgresql, sqlite3, sqlserver, trilogy. Ensure that the adapter is spelled correctly in config/database.yml and that you've added the necessary adapter gem to your Gemfile if it's not in the list of available adapters."