Fix build (broken by #1524 before)

[veado]

Fixes following build error on develop branch after merging #1524 into it:

ERROR in /home/runner/work/asgardex-electron/asgardex-electron/src/renderer/const.ts
    [tsl] ERROR in /home/runner/work/asgardex-electron/asgardex-electron/src/renderer/const.ts(150,7)
          TS2322: Type '{ testnet: string; mainnet: string; readonly chaosnet: string; }' is not assignable to type 'Record<Network, string>'.
      Object literal may only specify known properties, and 'chaosnet' does not exist in type 'Record<Network, string>'.

^ https://github.com/thorchain/asgardex-electron/runs/2784646724#step:8:44