Fix expo ios model path

[riderodd]

No description provided.

[Copilot]

Pull Request Overview

This PR fixes iOS model path handling in the Expo plugin for react-native-vosk. The issue was with incorrect path resolution when adding model resources to Xcode projects in Expo environments.

• Corrects the iOS root directory reference from projectRoot to platformProjectRoot
• Fixes model path resolution by properly joining the project root with relative model paths
• Updates version to 2.1.4 and adds changelog configuration

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
plugin/src/withVosk.ts	Fixes iOS model path resolution by using correct project root references and path joining
package.json	Version bump to 2.1.4 and adds changelog configuration
CHANGELOG.md	Adds changelog entries for version 2.1.4