Change package.json check from executable to readable

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

plugins/shopify/_shopify

@@ -44,8 +44,7 @@ _shopify_themes() {
   if (( $#fresh )); then
     themes=("${(@f)$(< "$cache_file")}")
   else
-    json="$(command shopify theme list --json 2>/dev/null)" || return 1
-    # One chunk per object, in zsh, so there is no dependency on jq.
+    json="$(shopify theme list --json 2>/dev/null)" || return 1
     split="${json//\{/$nl}"
     for entry in ${(f)split}; do
       id="" name="" role=""

plugins/shopify/shopify.plugin.zsh

@@ -30,8 +30,7 @@ function _shopify_project_type() {
 
   while [[ -n "$dir" && "$dir" != "/" && "$dir" != "$HOME" ]]; do
     if [[ -x "$dir/node_modules/.bin/h2" ]] ||
-      [[ -f "$dir/package.json" && "$(<"$dir/package.json")" == *'"@shopify/hydrogen"'* ]]; then
-      print -r -- hydrogen
+      [[ -r "$dir/package.json" && "$(<"$dir/package.json")" == *'"@shopify/hydrogen"'* ]]; then
       return 0
     fi