Avoid auto-disconnect when inactive

[fregante]

• Fixes After recent upgrade, GhostText disconnects from editor after 30 seconds #317

I was able to reproduce the issue in Chrome + VSCode. This PR appears to fix it. Other editor plugins might need an update if they throw an error on unrecognized messages.

[erwin]

Not sure if I'm getting the exact same issue, but also for me the connection drops off after approximately 30 seconds...

I am on Firefox for Linux Beta, 129.0b9

GhostText version 24.7.6 (released July 28th, 2024)

I made a screenrecording of what I'm seeing...
Right at ~30 seconds, the buffer that GhostText is operating on in neovim just drops.

GhostText.2024-07-29.10-08.mp4

(Just start at 30 seconds to see the buffer ghosttext is using disappear)

I am on the latest stable release of nvim:

nvim -V1 -v
NVIM v0.10.0
Build type: Release
LuaJIT 2.1.1720049189

Sure is a cool idea for a piece of software!