Fix for actions that don't have a runafter property

[stefanstranger]

Describe the bug
Some actions can miss the runafter property.

Expected behavior
No errors when an action does not have a runafter property.

PowerShell version:
Run $PSVersionTable command in PowerShell host
e.g.

Name                           Value
----                           -----
PSVersion                      7.3.6
PSEdition                      Core
GitCommitId                    7.3.6
OS                             Microsoft Windows 10.0.22621
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

LogicAppDocs version

• Version 1.1.2

[stefanstranger]

Resolved with PR #32