Fix 'meson install' when cross compiling

Prevent execution of target's fc-cache on host when installing
13 jobs for meson-cross-compile-fix in 12 minutes and 41 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #5170065
gst-macos-10.15
meson macos

00:00:51

passed #5170280
meson-mingw-w64-build

00:05:33

manual #5170066
docker windows 1809 allowed to fail manual
meson msys2
passed #5170060
meson-shared-build

00:03:54

passed #5170279
meson-static-build

00:05:48

passed #5170063
docker windows 1809
meson vs2017 amd64

00:01:04

passed #5170281
docker windows 1809
meson vs2017 x86

00:01:06

passed #5170059
mingw-build

00:05:05

passed #5170057
shared-build

00:06:52

passed #5170058
static-build

00:05:19

failed #5170062
meson-mingw-w64-build

00:01:01

failed #5170061
meson-static-build

00:01:13

failed #5170064
docker windows 1809
meson vs2017 x86

00:00:23