resolveDockVisibility throws TypeError when called without arguments or with nullish parameter

[hsusul]

Describe the bug

In src/helpers/dockPolicy.js:

resolveDockVisibility({ platform, controlPanelVisible }) directly destructures its first parameter without defaulting to an empty object. When called with null, undefined, or with no arguments, it throws:

TypeError: Cannot destructure property 'platform' of 'undefined' / 'null'.

To Reproduce

1. Call resolveDockVisibility() -> throws TypeError.
2. Call resolveDockVisibility(null) -> throws TypeError.
3. Call resolveDockVisibility(undefined) -> throws TypeError.

Expected Behavior

resolveDockVisibility should safely handle null, undefined, or missing arguments, returning null off-darwin or when platform is not darwin, without throwing an error.

[Chadpiha]

Closing together with #1818 — full reasoning over there. Thanks for the report, @hsusul!