Kibana Edit index lifecycle policy GUI doesn't allow 0 for delete phase timing

[Nick-Anderssohn]

Kibana version: 7.4.1

Elasticsearch version: 7.4.1

Server OS version: linux/amd64

Browser version: Chrome

Browser OS version: linux/amd64

Original install method (e.g. download page, yum, from source, etc.): docker

Describe the bug: The gui for editing an index lifecycle policy doesn't allow you to set min_age of the delete phase to 0. Instead it displays an error. The error message appears to be caused by client-side validation rather than an error being returned from ElasticSearch.

Steps to reproduce:

1. Create an ILM policy.
2. Go to Management -> Index Lifecycle Policies and select the policy.
3. Enable the delete phase if it isn't already.
4. Try to save 0 as the value for "Timing for delete phase".
5. A red line will appear under the box, and hovering over the input box will display this error message: "Value must be greater than or equal to 1."

Expected behavior:
It allows you to save the policy.

Screenshots (if relevant):

Errors in browser console (if relevant):

Provide logs and/or server output (if relevant):

Any additional context:

[elasticmachine]

Pinging @elastic/es-ui (Team:Elasticsearch UI)

[cjcenizal]

Thanks for reporting this @Nick-Anderssohn! I believe this is a duplicate of #50476. If so, then we've fixed this bug via #53719. The fix will ship with 7.6.0.

I'm going to close this but if you believe this is a different bug we'll reopen.