Block Kit Modals snippet: ensure we complete the function

[filmaj]

With the block kit modal example as-is, while it works and no errors are shown, we do not complete the function, and thus the workflow. The in-line response_action-based approach to interactivity handler return values do not allow us to control anything about function or workflow state in the automation platform.

This PR calls functions.completeSuccess to ensure we 'close' the function/workflow state appropriately.

slack run logs prior to this PR, after running through the flow this snippet shows off:

Connected, awaiting events
2024-01-08 11:46:33 [info] [Wf06CU3ELAN9] (Trace=Tr06CZEUSK6G) Shortcut trigger successfully started execution of function 'Block Kit Modal Demo Workflow'
2024-01-08 11:46:33 [info] [Fn06CWTHH0QK] (Trace=Tr06CZEUSK6G) Function 'Block Kit Modal Demo Workflow' (workflow function) started
2024-01-08 11:46:33 [info] [Wf06CU3ELAN9] (Trace=Tr06CZEUSK6G) Workflow 'Block Kit Modal Demo Workflow' started
2024-01-08 11:46:34 [info] [Wf06CU3ELAN9] (Trace=Tr06CZEUSK6G) Workflow step 1 of 1 started
2024-01-08 11:46:34 [info] [Fn06CWTHGH0T] (Trace=Tr06CZEUSK6G) Function 'Block Kit modal demo' (app function) started
view_closed handler called: {"id":"V06CGEZLF8X","team_id":"T029V6468RL","app_id":"A06CZEP1KMJ","app_installed_team_id":"T029V6468RL","bot_id":"B06CGETMEQP","title":{"type":"plain_text","text":"My App","emoji":true},"type":"modal","blocks":[{"type":"section","block_id":"Uuao9","text":{"type":"mrkdwn","text":"First: first test first test first test","verbatim":false}},{"type":"section","block_id":"RtDGp","text":{"type":"mrkdwn","text":"Second: second","verbatim":false}}],"close":{"type":"plain_text","text":"Close","emoji":true},"submit":null,"state":{"values":{}},"hash":"1704732411.IE43FEwR","private_metadata":"","callback_id":"completion","root_view_id":"V06CGEZLF8X","previous_view_id":null,"clear_on_close":false,"notify_on_close":true,"external_id":""}

Note there is no logging to say that function completed and the workflow is done.

slack run logs from this PR:

Connected, awaiting events
2024-01-08 11:48:46 [info] [Wf06CU3ELAN9] (Trace=Tr06CWU3MH0B) Shortcut trigger successfully started execution of function 'Block Kit Modal Demo Workflow'
2024-01-08 11:48:46 [info] [Fn06CWTHH0QK] (Trace=Tr06CWU3MH0B) Function 'Block Kit Modal Demo Workflow' (workflow function) started
2024-01-08 11:48:47 [info] [Wf06CU3ELAN9] (Trace=Tr06CWU3MH0B) Workflow 'Block Kit Modal Demo Workflow' started
2024-01-08 11:48:47 [info] [Wf06CU3ELAN9] (Trace=Tr06CWU3MH0B) Workflow step 1 of 1 started
2024-01-08 11:48:47 [info] [Fn06CWTHGH0T] (Trace=Tr06CWU3MH0B) Function 'Block Kit modal demo' (app function) started
view_closed handler called: {"id":"V06CQCLGVSS","team_id":"T029V6468RL","app_id":"A06CZEP1KMJ","app_installed_team_id":"T029V6468RL","bot_id":"B06CGETMEQP","title":{"type":"plain_text","text":"My App","emoji":true},"type":"modal","blocks":[{"type":"section","block_id":"mwrvW","text":{"type":"mrkdwn","text":"First: asdfasdfadsfadsfdasfasfasdfsdaf","verbatim":false}},{"type":"section","block_id":"Q6hZa","text":{"type":"mrkdwn","text":"Second: asdfasdfasdf","verbatim":false}}],"close":{"type":"plain_text","text":"Close","emoji":true},"submit":null,"state":{"values":{}},"hash":"1704732534.fE5uvhij","private_metadata":"","callback_id":"completion","root_view_id":"V06CQCLGVSS","previous_view_id":null,"clear_on_close":false,"notify_on_close":true,"external_id":""}
2024-01-08 11:48:56 [info] [Fn06CWTHGH0T] (Trace=Tr06CWU3MH0B) Function 'Block Kit modal demo' (app function) completed
2024-01-08 11:48:56 [info] [Wf06CU3ELAN9] (Trace=Tr06CWU3MH0B) Workflow step 'Block Kit modal demo' completed
2024-01-08 11:48:56 [info] [Fn06CWTHH0QK] (Trace=Tr06CWU3MH0B) Function 'Block Kit Modal Demo Workflow' (workflow function) completed
2024-01-08 11:48:56 [info] [Wf06CU3ELAN9] (Trace=Tr06CWU3MH0B) Workflow 'Block Kit Modal Demo Workflow' completed

Now we close the function/workflow appropriately.

[seratch]

Oh I see. Thank you!