Editor: Update Freelook Base Speed MAX value to 10000
I regularly use godot without access to a mouse and deal with scenes that require large traversal speeds.
The previous maximum value in Editor Settings -> Editors -> 3D -> Freelook was '10'.
As of Godot 4.3, it is possible to hold Right-Click and Scroll up/down to increase and decrease the freelook speed. Devices without the capability to scroll up/down (touchpad/trackpad) are unable to adjust the speed before this change.
In my practical use case 3000 is sufficient, but I figured it doesn't hurt to near-match the scroll up/down which has a maximum of 10000 currently.
Note: This bug https://github.com/godotengine/godot/issues/42054 still applies. When testing this PR you need to restart Godot after changing the value within your Editor Settings before the change is applied.