Incorrect translation names for buttons in Add Server screen

[notrohit1702]

Some of the translations for the Add Server screen have incorrect names (not values) in en_us.json.

• seamless_loading_screen.config.serverDisplayMode -> seamless_loading_screen.server.displayMode
• seamless_loading_screen.config.serverDisplayMode.description -> seamless_loading_screen.server.displayMode.description (unsure about this one)
• seamless_loading_screen.config.displayMode.enabled -> seamless_loading_screen.config.displayMode.ENABLED
• seamless_loading_screen.config.displayMode.freeze -> seamless_loading_screen.config.displayMode.FREEZE
• seamless_loading_screen.config.displayMode.disabled -> seamless_loading_screen.config.displayMode.DISABLED

(The flipping of the server address and server name is caused by another mod, this issue still persists without any other mods)

Here is a resource pack example that fixes this.