Action options get instantiated before execution if the template doesn't contain a variable

In the following example the template expression gets instantiated because it immediately evaluates to a fixed value.

```
"actions": {
"$pull": {
"type": "$set",
"options": {
"color": "{{var letters = '0123456789ABCDEF'; var color = '#'; for (var i = 0; i < 6; i++ ) { color += letters[Math.floor(Math.random() * 16)]; } return color;}}"
},
"success": {
"trigger": "update_color"
}
}
}
```

Currently I have to do something like this to ensure that the options stay un-instantiated until the execution point (because of the `$get` variable)

```
"actions": {
"$pull": {
"type": "$set",
"options": {
"color": [{
"{{#if 'color' in $get}}": "{{var letters = '0123456789ABCDEF'; var color = '#'; for (var i = 0; i < 6; i++ ) { color += letters[Math.floor(Math.random() * 16)]; } return color;}}"
}, {
"{{#else}}": "#ffffff"
}]
},
"success": {
"trigger": "update_color"
}
}
}
```

Other than this it works fine but it can be confusing in a few edge cases like this, so need to come up with a solution so that options NEVER get instantiated regardless of context

Start by tracing where action templates and their options are instantiated, comparing the direct expression with the `$get` workaround shown in the issue. Confirm that option expressions remain uninstantiated until action execution in both contexts, and add or update coverage for the random-color example if the repository has matching tests.

Written by the indexing model from the issue text.