fix(ios): prefer xcode-select over version scan for Xcode resolution

Reorder ios_resolve_developer_dir() priority so xcode-select -p is
checked before scanning /Applications for the highest-version Xcode.
On CI runners with multiple Xcode versions (including betas), the
version scan picked Xcode 26.4 beta which lacks iOS 26.2 runtime,
breaking RN iOS builds. Respecting xcode-select honors the explicit
pinning set by sudo xcode-select -s in CI workflows.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: abueide

plugins/ios/virtenv/scripts/platform/core.sh

@@ -70,19 +70,15 @@ ios_latest_xcode_dev_dir() {
 }
 
 # Resolve developer directory with multiple fallback strategies
+# Priority: IOS_DEVELOPER_DIR env > xcode-select > latest Xcode scan > fallback
 ios_resolve_developer_dir() {
   desired="${IOS_DEVELOPER_DIR:-}"
   if [ -n "$desired" ] && [ -d "$desired" ]; then
     printf '%s\n' "$desired"
     return 0
   fi
 
-  desired="$(ios_latest_xcode_dev_dir 2>/dev/null || true)"
-  if [ -n "$desired" ] && [ -d "$desired" ]; then
-    printf '%s\n' "$desired"
-    return 0
-  fi
-
+  # Prefer xcode-select (respects system/CI Xcode pinning via sudo xcode-select -s)
   if command -v xcode-select >/dev/null 2>&1; then
     desired="$(xcode-select -p 2>/dev/null || true)"
     if [ -n "$desired" ] && [ -d "$desired" ]; then
@@ -91,6 +87,13 @@ ios_resolve_developer_dir() {
     fi
   fi
 
+  # Fallback: scan /Applications for highest-version Xcode
+  desired="$(ios_latest_xcode_dev_dir 2>/dev/null || true)"
+  if [ -n "$desired" ] && [ -d "$desired" ]; then
+    printf '%s\n' "$desired"
+    return 0
+  fi
+
   if [ -d /Applications/Xcode.app/Contents/Developer ]; then
     printf '%s\n' "/Applications/Xcode.app/Contents/Developer"
     return 0