fix arrays of union types

[clifton]

fixes #287

the following object

    const openApiDoc: OpenAPIObject = {
        openapi: "3.0.0",
        info: {
            version: "1.0.0",
            title: "Union array",
        },
        paths: {},
        components: {
            schemas: {
                Foo: {
                    type: "object",
                    properties: {
                        foo: { type: "integer", enum: [1, 2] },
                    },
                },
                Bar: {
                    type: "object",
                    properties: {
                        bar: { type: "string", enum: ["a", "b"] },
                    },
                },
                Union: {
                    type: "object",
                    properties: {
                        unionArray: {
                            items: {
                                anyOf: [{ $ref: "#/components/schemas/Foo" }, { $ref: "#/components/schemas/Bar" }],
                            },
                            type: "array",
                        },
                    },
                },
            },
        },
    };

expected:
unionArray: Array<Foo | Bar>;
received 
unionArray: Array<(Foo | Bar) | Array<Foo | Bar>>;

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
openapi-zod-client-rim4	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 21, 2024 6:40pm

[AjayNathan]

@astahmer Any chance we could get this PR merged? We were using a custom deployed version on Vercel (https://gitpkg.vercel.app/clifton/openapi-zod-client/lib?union-arrays) that is no longer working due to payment issues. In the interim, we can publish a custom version to npm and use that, but in the long-term, we'd rather use the main package. Thanks so much!