CMAKE_MSVCIDE_RUN_PATH: Ignored unless a language is enabled

The implementation is guarded by MSVC_IDE, but that is only set here when a language is enabled using a MSVC-like compiler.

For example:

cmake_minimum_required(VERSION 3.20)
project(Issue22343 LANGUAGES NONE)
set(CMAKE_MSVCIDE_RUN_PATH "${CMAKE_SOURCE_DIR}")
add_custom_target(example COMMAND echo)

The PATH is not set inside example.vcxproj. Adding set(MSVC_IDE 1) works around the problem.