[BugFix] Use iOS xelement text inputs in Clay

- Removed iOS Clay bootstrap and builtin registrations for input and textarea tag families.

- Let iOS xelement text input tags override Clay C++ view entries during native tag sync.

- Verified with git diff --check.

- Prevent Clay gesture from cancelling native textarea touches

- summary: Guard native-owned iOS Clay platform view touch sequences from parent gesture recognition unless native event blocking is requested explicitly. This keeps textarea focus handling available inside a Clay scroll-view while preserving explicit blocking behavior.

SkipChecks: macro
AutoLand: release/4.0, release/3.9, release/3.8, release_3.8_weekly_20260522, release_3.8_weekly_20260605

Author: ci_lynx

clay/ui/component/builtin_views.cc

@@ -3,14 +3,17 @@
 // LICENSE file in the root directory of this source tree.
 #include "clay/ui/component/builtin_views.h"
 
+#include "build/build_config.h"
 #include "clay/ui/component/component.h"
 
 #ifndef ENABLE_CLAY_LITE
+#ifndef OS_IOS
 #include "clay/ui/component/editable/input_ng_view.h"
 #include "clay/ui/component/editable/input_view.h"
 #include "clay/ui/component/editable/textarea_ng_view.h"
 #include "clay/ui/component/editable/textarea_view.h"
 #include "clay/ui/shadow/editable_shadow_node.h"
+#endif  // OS_IOS
 #endif  // ENABLE_CLAY_LITE
 
 #ifndef LYNX_ENABLE_CLAY_NATIVE_LIST
@@ -63,12 +66,14 @@ REGISTER_CLAY_ELEMENT("list", ListContainerWrapper, void);
 REGISTER_CLAY_ELEMENT("list-container", ListContainerWrapper, void);
 
 #ifndef ENABLE_CLAY_LITE
+#ifndef OS_IOS
 REGISTER_CLAY_ELEMENT("x-input-ng", InputNGView, EditableShadowNode);
 REGISTER_CLAY_ELEMENT("x-textarea-ng", TextAreaNGView, EditableShadowNode);
 REGISTER_CLAY_ELEMENT("x-textarea", TextAreaView, EditableShadowNode);
 REGISTER_CLAY_ELEMENT("textarea", TextAreaView, EditableShadowNode);
 REGISTER_CLAY_ELEMENT("input", InputView, EditableShadowNode);
 REGISTER_CLAY_ELEMENT("x-input", InputView, EditableShadowNode);
+#endif  // OS_IOS
 #endif  // ENABLE_CLAY_LITE
 
 #if (defined(OS_MAC) || defined(OS_WIN))

clay/ui/component/view_context.cc

@@ -63,8 +63,9 @@ namespace clay {
 
 static bool ForceUseXElement(const std::string& tag) {
 #ifdef OS_IOS
-  return tag == "x-input";  // use xinput of xelement in iOS platform to avoid
-                            // some issues.
+  // Let iOS xelement text input registrations override Clay C++ entries.
+  return tag == "input" || tag == "x-input" || tag == "x-input-ng" ||
+         tag == "textarea" || tag == "x-textarea" || tag == "x-textarea-ng";
 #else
   return false;
 #endif