fix: num if empty string

[sgoral-splunk]

Issue number: ADDON-82402

PR Type

What kind of change does this PR introduce?

• Feature
• Bug Fix
• Refactoring (no functional or API changes)
• Documentation Update
• Maintenance (dependency updates, CI, etc.)

Summary

Sometimes in alert actions empty "rid" parameter is send and it caused problems because it wasn't set but InvalidKey was returned.

Changes

Handlers for empty string was added.

Checklist

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Review

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Tests

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🎉 This PR is included in version 8.0.1-beta.1 🎉

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