Fix shader compiling for non-editor builds

[AgitoReiKen]

When packaging a game, a RestyleShaders's shader is getting compiled.
Also one of the users encountered this error:

UATHelper: Packaging (Windows): ERROR: Missing precompiled manifest for 'RestyleShaders', '\Development\RestyleShaders\RestyleShaders.precompiled'. 
This module was most likely not flagged for being included in a precompiled build - set 'PrecompileForTargets = PrecompileTargetsType.Any;' in RestyleShaders.build.cs to override. If part of a plugin, also check if its 'Type' is correct.

[AgitoReiKen]

8b07d58
also made for v5.0