[BUG] Reports set with a floating point number trigger frequency are rounded without input

Describe the bug A non whole number value on a report trigger frequency results in frequency dropped to 0.

To Reproduce Steps to reproduce the behavior:

1. Create a report
2. Go to "report trigger"
3. select "schedule"
4. select "recurring"
5. select "frequency - by interval"
6. enter 0.5 for "every" and "hour"
7. click "create"

When you view the report definition, it will show "By interval, every 0 hours"

Expected behavior When you view the report definition, it will show "By interval, every 0.5 hours" or "By interval, every 30 minutes"

Plugins All OpenSearch plugins

Host/Environment (please complete the following information):

• OS: MacOS
• Version: Chrome Version 90.0.4430.212 (Official Build) (x86_64)
• OpenSearch 1.0 RC-1