[Bug]: dropins_mu_plugins in SystemStatus should be an object, not an array

[SzymonZasada]

📝 Description

In SystemStatus, dropins_mu_plugins is specified as an array, but WooCommerce
returns an object there, so GET /system_status can't be deserialized.

WooCommerce's get_dropins_mu_plugins() always returns:

array(
    'dropins'    => array(),
    'mu_plugins' => array(),
)

com.google.gson.JsonSyntaxException: java.lang.IllegalStateException:
Expected BEGIN_ARRAY but was BEGIN_OBJECT at line 1 column 5755 path $.dropins_mu_plugins

📌 Affected Specification Version

latest

❓ Issue Type

Incorrect Schema Definition

✅ Expected Behavior

use object instead of list

❌ Current Behavior

com.google.gson.JsonSyntaxException: java.lang.IllegalStateException:
Expected BEGIN_ARRAY but was BEGIN_OBJECT at line 1 column 5755 path $.dropins_mu_plugins for java api client

🔄 Steps to Reproduce

No response

🛠️ Suggested Fix (if any)

change spec to:

dropins_mu_plugins:
type: object
description: Dropins and MU plugins.

ℹ️ Additional Info

No response