test: add JSON-LD expansion and validation e2e tests

[huynguyen-hl]

What type of PR is this? (check all applicable)

• 🍕 Feature
• 🐛 Bug Fix
• 📝 Documentation Update
• 🎨 Style
• 🧑‍💻 Code Refactor
• 🔥 Performance Improvements
• ✅ Test
• 🤖 Build
• 🔁 CI
• 📦 Chore (Release)
• ⏩ Revert

Description

This PR implements end-to-end tests for the JSON-LD expansion validation step in the UNTP playground. These tests ensure the feature functions correctly across all scenarios, including valid JSON-LD credential expansion and various invalid JSON-LD cases. Additionally, they verify that error messages are displayed correctly in the UI.

Related Tickets & Documents

https://github.com/gs-gs/fa-ag-trace/issues/955

Mobile & Desktop Screenshots/Recordings

Valid case:

Missing "credentialSubject/invalid" property in the context:

Unresolvable/invalid context URL:

Term redefinition/conflicting field:

Added tests?

• 👍 yes
• 🙅 no, because they aren't needed
• 🙋 no, because I need help

Added to documentation?

• 📖 Mock App docs site
• 📜 README.md
• 📕 storybook
• 🙅 no documentation needed

[github-actions]

Code Coverage Report

Lines	Statements	Branches	Functions
	82.45% (3497/4241)	71.89% (862/1199)	76.7% (415/541)

Title	Lines	Statements	Branches	Functions
All packages		82.45% (3497/4241)	71.89% (862/1199)	76.7% (415/541)
Components		84.03% (516/614)	69.36% (120/173)	77.23% (95/123)
Mock app		71.89% (371/516)	53.23% (74/139)	68.14% (77/113)
Services		79.29% (1038/1309)	64.88% (255/393)	75.71% (106/140)
UNTP test suite		85.75% (1090/1271)	81.35% (144/177)	67.21% (41/61)
VC test suite		100% (20/20)	100% (2/2)	100% (4/4)
UNTP Playground		90.82% (495/545)	84.85% (269/317)	92.3% (96/104)