Migration failed due to missing kwargs in workflow hash

[anthotsang]

Received the following error when trying to perform the migration when upgrading to v4.1.0 (albeit from a very old v2.1.0), but it seems like this issue was introduced in v4.0.0 in this pull request.

Migrating to Gush::IndexWorkflowsByCreatedAtAndExpiresAt (1)
bundler: failed to load command: gush (/app/vendor/bundle/ruby/3.2.0/bin/gush)
/app/vendor/bundle/ruby/3.2.0/gems/gush-4.1.0/lib/gush/client.rb:284:in `workflow_from_hash': no implicit conversion of nil into Hash (TypeError)
	from /app/vendor/bundle/ruby/3.2.0/gems/gush-4.1.0/lib/gush/client.rb:142:in `find_workflow'
	from /app/vendor/bundle/ruby/3.2.0/gems/gush-4.1.0/lib/gush/migrate/1_create_gush_workflows_created.rb:10:in `block in up'
	from /app/vendor/bundle/ruby/3.2.0/gems/redis-5.4.1/lib/redis/commands/keys.rb:59:in `each'
	from /app/vendor/bundle/ruby/3.2.0/gems/redis-5.4.1/lib/redis/commands/keys.rb:59:in `block in scan_each'
	from /app/vendor/bundle/ruby/3.2.0/gems/redis-5.4.1/lib/redis/commands/keys.rb:57:in `loop'
	from /app/vendor/bundle/ruby/3.2.0/gems/redis-5.4.1/lib/redis/commands/keys.rb:57:in `scan_each'
	from /app/vendor/bundle/ruby/3.2.0/gems/gush-4.1.0/lib/gush/migrate/1_create_gush_workflows_created.rb:8:in `each'
	from /app/vendor/bundle/ruby/3.2.0/gems/gush-4.1.0/lib/gush/migrate/1_create_gush_workflows_created.rb:8:in `map'
	from /app/vendor/bundle/ruby/3.2.0/gems/gush-4.1.0/lib/gush/migrate/1_create_gush_workflows_created.rb:8:in `up'
	from /app/vendor/bundle/ruby/3.2.0/gems/gush-4.1.0/lib/gush/migration.rb:6:in `migrate'
	from /app/vendor/bundle/ruby/3.2.0/gems/gush-4.1.0/lib/gush/cli.rb:137:in `block in migrate'
	from /app/vendor/bundle/ruby/3.2.0/gems/gush-4.1.0/lib/gush/cli.rb:132:in `count'
	from /app/vendor/bundle/ruby/3.2.0/gems/gush-4.1.0/lib/gush/cli.rb:132:in `migrate'
	from /app/vendor/bundle/ruby/3.2.0/gems/thor-1.2.2/lib/thor/command.rb:27:in `run'
	from /app/vendor/bundle/ruby/3.2.0/gems/thor-1.2.2/lib/thor/invocation.rb:127:in `invoke_command'
	from /app/vendor/bundle/ruby/3.2.0/gems/thor-1.2.2/lib/thor.rb:392:in `dispatch'
	from /app/vendor/bundle/ruby/3.2.0/gems/thor-1.2.2/lib/thor/base.rb:485:in `start'
	from /app/vendor/bundle/ruby/3.2.0/gems/gush-4.1.0/bin/gush:13:in `<top (required)>'
	from /app/vendor/bundle/ruby/3.2.0/bin/gush:25:in `load'
	from /app/vendor/bundle/ruby/3.2.0/bin/gush:25:in `<top (required)>'
	from /app/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.23/lib/bundler/cli/exec.rb:58:in `load'
	from /app/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.23/lib/bundler/cli/exec.rb:58:in `kernel_load'
	from /app/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.23/lib/bundler/cli/exec.rb:23:in `run'
	from /app/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.23/lib/bundler/cli.rb:456:in `exec'
	from /app/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.23/lib/bundler/vendor/thor/lib/thor/command.rb:28:in `run'
	from /app/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.23/lib/bundler/vendor/thor/lib/thor/invocation.rb:127:in `invoke_command'
	from /app/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.23/lib/bundler/vendor/thor/lib/thor.rb:527:in `dispatch'
	from /app/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.23/lib/bundler/cli.rb:35:in `dispatch'
	from /app/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.23/lib/bundler/vendor/thor/lib/thor/base.rb:584:in `start'
	from /app/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.23/lib/bundler/cli.rb:29:in `start'
	from /app/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.23/exe/bundle:28:in `block in <top (required)>'
	from /app/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.23/lib/bundler/friendly_errors.rb:117:in `with_friendly_errors'
	from /app/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.23/exe/bundle:20:in `<top (required)>'
	from /app/bin/bundle:108:in `load'
	from /app/bin/bundle:108:in `<main>'

If a default is provided for hash[:kwargs] in workflow_from_hash here, it should solve the issue.