Field View PropertyValue always a string

[jhershey-marceldigital]

Describe the bug
The PropertyValue field of the FieldViewContext model is always a string. I expect to be able to use pattern matching/casting to get the typed value, or for documentation (here) to indicate that PropertyValue will come through as a string.

Steps To Reproduce
Steps to reproduce the behavior:

1. Add non-string fields to a List View configuration and invoke SetView.

collectionConfiguration.ListView(listViewConfig => {
    // field type is DateTimeOffset
    listViewConfig.AddField(x => x.StartEffectiveDate).SetHeading("#agencyProduct_startEffectiveDate").SetView("DateOnly");
    // field type is a custom entity, "Role"
    listViewConfig.AddField(x => x.Role).SetHeading("#agencyProduct_role").SetView("AgencyRole");
});

2. Invoke GetType() on the PropertyValue field within a custom Field View/

Environment (please complete the following information):

• Server OS: Windows
• Browser: Chrome
• Umbraco Version: 15.3.0
• Product Version: 15.1.2

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This item has been added to our backlog AB#51757