[Rails 7] Raise error asking for non-existing table columns

[mgrunberg]

mysql, sqlite3 and postgresql have consistent behaviour regarding non-existing table columns (see this commit).

SQL server was returning an empty array.

This is a breaking change but apps can recover by adding a rescue block.
Make more sense to behave like all other adapters.

Fixes:

Failure:
ActiveRecord::ConnectionAdapters::SchemaCacheTest#test_columns_for_non_existent_table [/home/matias/.rvm/gems/ruby-2.7.4/bundler/gems/rails-5850a6592ff1/activerecord/test/cases/connection_adapters/schema_cache_test.rb:139]:
ActiveRecord::StatementInvalid expected but nothing was raised.

Failure:
ActiveRecord::ConnectionAdapters::SchemaCacheTest#test_columns_hash_for_non_existent_table [/home/matias/.rvm/gems/ruby-2.7.4/bundler/gems/rails-5850a6592ff1/activerecord/test/cases/connection_adapters/schema_cache_test.rb:149]:
ActiveRecord::StatementInvalid expected but nothing was raised.

Before (https://github.com/rails-sqlserver/activerecord-sqlserver-adapter/runs/4674744906?check_suite_focus=true):

7739 runs, 21036 assertions, 94 failures, 60 errors, 43 skips

After (https://github.com/rails-sqlserver/activerecord-sqlserver-adapter/runs/4735046133?check_suite_focus=true):

7743 runs, 21049 assertions, 92 failures, 60 errors, 43 skips