Ender 5 Plus Configs - Increase Mesh Inset

[BLR-IIC]

As far as I can tell, the Ender 5 Plus configuration.h files have too low of a MESH_INSET. This causes a couple problems:

Description

1. UBL probing does not always probe unique bed positions and will probe the same spot more than once.
2. The power cord for the Y-carriage stepper motor is too short for the current MESH_INSET values and will be pulled out of its socket on the motor.

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Benefits

Benefits of this PR include:

1. UBL probes unique locations on the print bed
2. The power cord for the Y-carriage stepper motor doesn't get stretched to the point its plug pulls out of the stepper motor's socket.

Related Issues

May fix #1106