tweak(system_resources/chat): Hide invalid command in chat

[outsider31000]

Goal of this PR

users often type invalid commands and this fallback allows to still be posted as message and everyone can see it.
it will fill the whole chat just with these and can become quite annoying
many users in my community ask how to remove this.

How is this PR achieving the goal

removes the fallback message when a command is not valid

This PR applies to the following area(s)

RedM/FiveM

Successfully tested on

Game builds: ..

Platforms: Windows, Linux

Checklist

• Code compiles and has been tested successfully.
• Code explains itself well and/or is documented.
• My commit message explains what the changes do and what they are for.
• No extra compilation warnings are added by these changes.

Fixes issues