Fix wrong links generated for derived type with navigation property when odata.metadata=full

[gathogojr]

This pull request fixes #797.

Description

Fix wrong links generated for derived type with navigation property when odata.metadata=full. When odata.metadata=full is specified, the type-cast segment is wrongly appended to the resource id.

When that happens, since ODL also appends the type-cast segment, you end up with the response payload looking as follows:

{
    "@odata.context": "http://localhost:5219/odata/$metadata#Customers/ODataAlternateKeySample.Models.GoldCustomer/$entity",
    "@odata.type": "#ODataAlternateKeySample.Models.GoldCustomer",
    "@odata.id": "http://localhost:5219/odata/Customers(1)/ODataAlternateKeySample.Models.GoldCustomer",
    "@odata.editLink": "Customers(1)/ODataAlternateKeySample.Models.GoldCustomer/ODataAlternateKeySample.Models.GoldCustomer",
    "Id": 1,
    "Name": "Tom",
    "CountryOrRegion": null,
    "Passport": null,
    "SSN": "SSN-1-101",
    "Titles@odata.type": "#Collection(String)",
    "Titles": [ "abc", null, "efg" ],
    "Contact@odata.associationLink": "http://localhost:5219/odata/Customers(1)/ODataAlternateKeySample.Models.GoldCustomer/ODataAlternateKeySample.Models.GoldCustomer/Contact/$ref",
    "Contact@odata.navigationLink": "http://localhost:5219/odata/Customers(1)/ODataAlternateKeySample.Models.GoldCustomer/ODataAlternateKeySample.Models.GoldCustomer/Contact"
}

This pull request fixes the generation of @odata.id, @odata.editLink, @odata.associationLink and @odata.nagivationLink properties such that the response payload looks as follows:

{
    "@odata.context": "http://localhost:5219/odata/$metadata#Customers/ODataAlternateKeySample.Models.GoldCustomer/$entity",
    "@odata.type": "#ODataAlternateKeySample.Models.GoldCustomer",
    "@odata.id": "http://localhost:5219/odata/Customers(1)/ODataAlternateKeySample.Models.GoldCustomer",
    "@odata.editLink": "Customers(1)/ODataAlternateKeySample.Models.GoldCustomer",
    "Id": 1,
    "Name": "Tom",
    "CountryOrRegion": null,
    "Passport": null,
    "SSN": "SSN-1-101",
    "Titles@odata.type": "#Collection(String)",
    "Titles": [ "abc", null, "efg" ],
    "Contact@odata.associationLink": "http://localhost:5219/odata/Customers(1)/ODataAlternateKeySample.Models.GoldCustomer/Contact/$ref",
    "Contact@odata.navigationLink": "http://localhost:5219/odata/Customers(1)/ODataAlternateKeySample.Models.GoldCustomer/Contact"
}

[xuzhg]

@gathogojr Is it part of #798 ?

[gathogojr]

@gathogojr Is it part of #798 ?

@xuzhg I didn't realize the customer had created a PR