ci: simplify Yarn config copying

Paths are now correctly resolved relative to the config file so we no
longer need to override most settings.

Author: tido64

knip.config.ts

@@ -28,7 +28,7 @@ export default {
   metro: false,
   workspaces: {
     ".": {
-      entry: ["scripts/*.js", "scripts/*.ts"],
+      entry: ["scripts/*.ts"],
       ignoreDependencies: ["@nx/js", "@yarnpkg/*"],
     },
     "packages/app": {

scripts/copy-yarnrc.js

@@ -40,7 +40,9 @@ v=$(cat packages/app/example/package.json | jq '.dependencies["react-native"]' |
 node packages/app/scripts/init.mjs --destination template-example --name TemplateExample --version $v $@
 
 pushd template-example 1> /dev/null
-node "$script_dir/copy-yarnrc.js" ../.yarnrc.yml
+
+# The rest of the settings are inherited from the root `.yarnrc.yml`
+echo "nodeLinker: node-modules" > .yarnrc.yml
 
 # Workaround for NuGet publishing failures
 cp ../yarn.lock .