Lagrange cannot use a non-Gemini search engine

[ElonSatoshi]

How to reproduce:

• Go to the Veronica 2 gopherhole: gopher://gopher.floodgap.com:70/1/v2
• Right click on "Search Veronica-2" and click "Use as search URL"
• Try to search for something in the address bar

Expected result: You search for something on Veronica 2

Actual result: Lagrange interprets gopher:// as trying to access the domain name "gopher" through gemini, coming up with a broken URI like this: gemini://gopher://gopher.floodgap.com:70/7/v2/vs?test

In other words, it sticks gemini:// in front of gopher:// and fails to load.