Missing Yield breaks compatibility with Rails 7.1+

[JustusEilersSC]

The Issue

In the internal implementation of the MySQL adapter, a block is passed to execute_and_free, which works for the implementation of calling :all and :primary but for calling the replica there is no super call and thus no yield that would wrap the result by calling the build_result method.
This causes a MySQL::Result to be returned instead of an ActiveRecord::Result and this causes some breaking things. In my case the issues was triggered by using the protected_attributes_continued gem.

https://github.com/rails/rails/blob/40a0294faf6c8aefdbad16d88d3b94fa3050f6dd/activerecord/lib/active_record/connection_adapters/mysql2/database_statements.rb#L21C9-L39C12

def internal_exec_query(sql, name = "SQL", binds = [], prepare: false, async: false) # :nodoc:
          if without_prepared_statement?(binds)
            execute_and_free(sql, name, async: async) do |result|
              if result
                build_result(columns: result.fields, rows: result.to_a)
              else
                build_result(columns: [], rows: [])
              end
            end
          else
            exec_stmt_and_free(sql, name, binds, cache_stmt: prepare, async: async) do |_, result|
              if result
                build_result(columns: result.fields, rows: result.to_a)
              else
                build_result(columns: [], rows: [])
              end
            end
          end
        end

How to fix it

The fix is as simple as adding a yield in front of send_to_replica. I am happy to implement this as well, just let me know how to contribute as I miss a CONTRIBUTING file in this repo.
Note: this change should be made also for execute and execute_raw

def execute_and_free(sql, name = nil, async: false)
        case where_to_send?(sql)
        when :all
          send_to_replica(sql, connection: :all, method: :execute)
          super(sql, name, async:)
        when :replica
          yield send_to_replica(sql, connection: :replica, method: :execute)
        else
          Janus::Context.stick_to_primary if write_query?(sql)
          Janus::Context.used_connection(:primary)
          super(sql, name, async:)
        end
      end