Remove Deno shims from bundle

We're getting some Deno shims - maybe for CJS support.

https://www.npmjs.com/package/effection?activeTab=code

const dntGlobals = {};
2export const dntGlobalThis = createMergeProxy(globalThis, dntGlobals);
3function createMergeProxy(baseObj, extObj) {
4    return new Proxy(baseObj, {
5        get(_target, prop, _receiver) {
6            if (prop in extObj) {
7                return extObj[prop];
8            }
9            else {
10                return baseObj[prop];
11            }
12        },
13        set(_target, prop, value) {
14            if (prop in extObj) {
15                delete extObj[prop];
16            }
17            baseObj[prop] = value;
18            return true;
19        },
20        deleteProperty(_target, prop) {
21            let success = false;
22            if (prop in extObj) {
23                delete extObj[prop];
24                success = true;
25            }
26            if (prop in baseObj) {
27                delete baseObj[prop];
28                success = true;
29            }
30            return success;
31        },
32        ownKeys(_target) {
33            const baseKeys = Reflect.ownKeys(baseObj);
34            const extKeys = Reflect.ownKeys(extObj);
35            const extKeysSet = new Set(extKeys);
36            return [...baseKeys.filter((k) => !extKeysSet.has(k)), ...extKeys];
37        },
38        defineProperty(_target, prop, desc) {
39            if (prop in extObj) {
40                delete extObj[prop];
41            }
42            Reflect.defineProperty(baseObj, prop, desc);
43            return true;
44        },
45        getOwnPropertyDescriptor(_target, prop) {
46            if (prop in extObj) {
47                return Reflect.getOwnPropertyDescriptor(extObj, prop);
48            }
49            else {
50                return Reflect.getOwnPropertyDescriptor(baseObj, prop);
51            }
52        },
53        has(_target, prop) {
54            return prop in extObj || prop in baseObj;
55        },
56    });
57}

We should remove these from the bundle

Start by inspecting the published effection bundle linked in the issue and trace where the Deno shim code is introduced. Confirm which bundling or packaging entry point produces it, then verify that a rebuilt bundle no longer contains the shown Deno shim code.