Bug: Any non-string value in GraphError.Path will cause the GraphService to throw a ShopifyJsonParseException

[nozzlegear]

The default System.Text.Json deserializer does not like to coerce integers to strings like Newtonsoft.Json does. It prefers to throw an exception instead.

Example problematic json:

{"errors":[{"message":"you must provide one of first or last","locations":[{"line":23,"column":13}],"path":["orders","nodes",0,"lineItems"]}],"data":null,"extensions":{"cost":{"requestedQueryCost":40,"actualQueryCost":16,"throttleStatus":{"maximumAvailable":2000.0,"currentlyAvailable":1984,"restoreRate":100.0}}}}

The integer 0 in "path": ["orders", "nodes", 0, "lineItems"] will make System.Text.Json throw a JsonException, which ShopifySharp catches and wraps up in a ShopifyJsonParseException.

Related to #1149, the SystemJsonDeserializer needs to ease up on its strict parsing rules for these properties that Shopify doesn't document.