fix: resolve symlinks for test context's path

[targos]

On macOS, os.tmpdir() returns a path that contains a symbolic links.
This can cause issues with modules that expect the environment to only
contain real paths. For example, the resolve module uses the HOME env
variable, which is derived from the context's path.

Example of fixed error:

error: error:              | not ok 450 sanity check: require.resolve finds HNM `baz`
error:                     | ---
error:                     | operator: equal
error:                     | expected: |-
error:                     | '/var/folders/9n/05y6s4ls78515vmnbd86hktm0000gn/T/fc57c0d4-4128-4194-8fb0-f862577957ef/home/.node_modules/baz/quux.js'
error:                     | actual: |-
error:                     | '/private/var/folders/9n/05y6s4ls78515vmnbd86hktm0000gn/T/fc57c0d4-4128-4194-8fb0-f862577957ef/home/.node_modules/baz/quux.js'
error:                     | at: <anonymous> (/private/var/folders/9n/05y6s4ls78515vmnbd86hktm0000gn/T/fc57c0d4-4128-4194-8fb0-f862577957ef/resolve/test/home
error:                     | stack: |-
error:                     | Error: sanity check: require.resolve finds HNM `baz`
error:                     | at Test.assert [as _assert] (/private/var/folders/9n/05y6s4ls78515vmnbd86hktm0000gn/T/fc57c0d4-4128-4194-8fb0-f862577957ef/resol
error:                     | at Test.strictEqual (/private/var/folders/9n/05y6s4ls78515vmnbd86hktm0000gn/T/fc57c0d4-4128-4194-8fb0-f862577957ef/resolve/node_
error:                     | at /private/var/folders/9n/05y6s4ls78515vmnbd86hktm0000gn/T/fc57c0d4-4128-4194-8fb0-f862577957ef/resolve/test/home_paths_sync.js
error:                     | at /private/var/folders/9n/05y6s4ls78515vmnbd86hktm0000gn/T/fc57c0d4-4128-4194-8fb0-f862577957ef/resolve/test/home_paths_sync.js
error:                     | at /private/var/folders/9n/05y6s4ls78515vmnbd86hktm0000gn/T/fc57c0d4-4128-4194-8fb0-f862577957ef/resolve/node_modules/mkdirp/ind
error:                     | at FSReqCallback.oncomplete (node:fs:189:23)
error:                     | ...