fix(app): solidify workspace tests + drag & drop functionality & reordering

[neriousy]

Issue for this PR

Closes #67

Type of change

• Bug fix
• New feature
• Refactor / code improvement
• Documentation

What does this PR do?

Workspace-test was flaky, this pr solidifies it
Workspace drag & drop functionality was jumpy / not properly following the cursor

Fixes this error which was happening when running e2e test

[chromium] › e2e/projects/workspaces.spec.ts:254:1 › can delete a workspace
[e2e:pageerror] TypeError: 'get' on proxy: property 'Symbol(solid-proxy)' is a read-only and non-configurable data property on the proxy target but the proxy did not return its actual value (expected '[object Array]' but got '[object Array]')
    at isWrappable (http://127.0.0.1:3000/node_modules/.vite/deps/chunk-N72VEKS2.js?v=b739287e:41:56)
    at http://127.0.0.1:3000/node_modules/.vite/deps/chunk-N72VEKS2.js?v=b739287e:430:9
    at http://127.0.0.1:3000/node_modules/.vite/deps/chunk-N72VEKS2.js?v=b739287e:435:7
    at updatePath (http://127.0.0.1:3000/node_modules/.vite/deps/chunk-N72VEKS2.js?v=b739287e:205:13)
    at http://127.0.0.1:3000/node_modules/.vite/deps/chunk-N72VEKS2.js?v=b739287e:225:77
    at runUpdates (http://127.0.0.1:3000/node_modules/.vite/deps/chunk-EZWYHVNM.js?v=b739287e:845:17)
    at batch (http://127.0.0.1:3000/node_modules/.vite/deps/chunk-EZWYHVNM.js?v=b739287e:454:10)
    at setStore (http://127.0.0.1:3000/node_modules/.vite/deps/chunk-N72VEKS2.js?v=b739287e:224:5)
    at setProjects (http://127.0.0.1:3000/src/context/global-sync.tsx?t=1774534252793:66:7)
    at Object.set (http://127.0.0.1:3000/src/context/global-sync.tsx?t=1774534252793:82:7

Overall the workspace test follows @Hona's earlier pattern when solidifying tests

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How did you verify your code works?

Run tests
Drag & drop workspaces - local should not be moved

Screenshots / recordings

2026-03-26.16-19-16.mp4

If this is a UI change, please include a screenshot or recording.

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

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