devtool: deploy: Run pseudo with correct PATH

devtool: deploy: Run pseudo with correct PATH

When running FAKEROOTCMD (i.e. pseudo), we need to use the same PATH as
we would use if we were running inside bitbake instead of the host
environment's PATH. This ensures that we don't pick up any host
executables that may have problems with pseudo (such as the uutils
implementations of common system utilities used in Ubuntu 25.10).

Signed-off-by: Paul Barker <paul@pbarker.dev>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>