Add hidden fields to forms for Netlify to detect

[dtuite]

https://app.shortcut.com/larder/story/22581/add-referrer-to-demo-and-trial-requests

Without these hidden fields, the data is sent to Netlify but never recorded

[sonarcloud]

Quality Gate passed

Issues
3 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[sentry-io]

Suspect Issues

This pull request was deployed and Sentry observed the following issues:

• ‼️ TypeError: Cannot read properties of undefined (reading 'social') LinkedinInner(webpack-internal:///./src/compone... View Issue

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