Filter on Collection property

[HristoS]

Describe the bug
Filter is not properly generated for collection property

To Reproduce
I have model like
Order{
ICollection Clients {get; set;}
}

I've added grid column like
columns.Add(o => o.Clients)
.Titled(LocTabHeader("Clients"))
.RenderValueAs(o => String.Join(",", o.Clients.Select(x => Clients.FirstOrDefault(c => c.Value == x.ClientId.ToString())?.Title ?? x.ClientId.ToString())))
.SetFilterWidgetType("ClientsFilterComponent")
.Filterable(true)
Where for ClientsFilterComponent i've followed https://github.com/gustavnavar/Grid.Blazor/blob/master/docs/blazor_client/Creating_custom_filter_widget.md with the difference in ApplyButtonClicked

await GridHeaderComponent.AddFilter(new FilterCollection("/any", $"(c: c/ClientId eq {_filterValue})"))

so i've expected filter to be generated like
filter=(tolower(MysteryJackpotInstanceClients)/any(c: c/clientid+eq+'2')) so that I can search in the expandable collection, but instead filter is filter=(tolower(MysteryJackpotInstanceClients)+eq+'(c:+c/clientid+eq+2)'

Expected behavior
filter=(tolower(MysteryJackpotInstanceClients)/any(c: c/clientid+eq+'2')).

Screenshots
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Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
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