Restore original merging order to enforce if_exists: true

The merging order was accidentally changed at #32447. The original
intention is force `drop_table ... if_exists: true`. #28070.

activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb

@@ -305,8 +305,7 @@ def create_table(table_name, comment: nil, **options)
         yield td if block_given?
 
         if options[:force]
-          drop_opts = { if_exists: true }.merge(**options)
-          drop_table(table_name, drop_opts)
+          drop_table(table_name, options.merge(if_exists: true))
         end
 
         result = execute schema_creation.accept td