chore(api-client): replace jsdom by happy-dom env

[mkucmus]

Description

change an env from jsdom to happy-dom - also snapshot was simplified

fixes failing vitest https://github.com/shopware/frontends/actions/runs/20126976719/job/57758787679

Type of change

ToDo's

Screenshots (if applicable)

Additional context

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[codspeed-hq]

CodSpeed Performance Report

Merging #2172 will create unknown performance changes

_{Comparing chore/ofetch-upgrade (3c74526) with main (79a1f54)¹}

Summary

⚠️ No benchmarks were detected in both the base of the PR and the PR.
Please ensure that your benchmarks are correctly instrumented with CodSpeed.

Check out the benchmarks creation guide

⏩ 8 skipped²

Footnotes

1. No successful run was found on main (926aa11) during the generation of this report, so 79a1f54 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

2. 8 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[Copilot]

Pull request overview

This PR replaces jsdom with happy-dom as the test environment for the api-client package to fix failing vitest tests. The change involves updating dependencies, test configurations, and test assertions to account for differences between the two DOM implementations.

Key Changes:

• Replaced jsdom with happy-dom v20.0.11 in devDependencies
• Added global environment configuration in vitest.config.ts
• Updated test assertions to match happy-dom's behavior (error messages, user-agent strings)

Reviewed changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
packages/api-client/package.json	Replaced jsdom dependency with happy-dom
packages/api-client/vitest.config.ts	Added happy-dom as the test environment
packages/api-client/src/createApiClient.test.ts	Updated environment directive, adjusted assertions for happy-dom compatibility
packages/api-client/src/createAdminApiClient.test.ts	Updated abort error message assertion
pnpm-lock.yaml	Updated lockfile with happy-dom dependencies, removed jsdom

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