fix: use plugin instances instead of raw plugins array to prevent eror when getting plugin config

[letiescanciano]

Description

When plugins are defined as functions in Docusaurus config, getPluginConfig crashes trying to access data[1].id on non-array entries. By passing pluginInstances (pre-filtered for docusaurus-plugin-openapi-docs) instead of the raw plugins array, we ensure only valid array-formatted plugins are processed.

Motivation and Context

Fixes #1246

How Has This Been Tested?

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist

• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes if appropriate.
• All new and existing tests passed.

[sserrata]

Hi @letiescanciano, just a heads up that builds are failing with your changes.

[sserrata]

@dependabot rebase

[sserrata]

Fix looks correct — passing pluginInstances (pre-filtered to docusaurus-plugin-openapi-docs tuples) instead of the raw plugins array prevents the TypeError when non-array plugins (e.g. function plugins) are present in the config. Also catches the edge case where another plugin shares the same ID as the openapi-docs plugin. Good test coverage. Will merge once CI is green.

[sserrata]

CI is failing due to two TypeScript implicit any[] errors in the test file. Here's the fix:

- const plugins = [];
+ const plugins: any[] = [];

- const pluginInstances = [];
+ const pluginInstances: any[] = [];

Lines 40 and 133 in src/index.test.ts — just add : any[] to both empty array declarations.