Update KDL to deprecate webkitLineClamp in CSSStyleProperties and enhance TypeScript handling for empty objects

Author: Bashamega

inputfiles/patches/cssom.kdl

@@ -8,8 +8,12 @@ interface CSSStyleDeclaration \
 
 interface CSSStyleProperties replaceReference=CSSStyleDeclaration {
   property wordWrap deprecated="The 'wordWrap' property is non-standard and has been replaced by 'overflow-wrap' in modern CSS."
-  
-  // The corresponding standardized property is not supported by
-  // anyone as of 2024-10.
-  property webkitLineClamp supported=#true
+}
+
+removals {
+  interface CSSStyleProperties {
+    // The corresponding standardized property is not supported by
+    // anyone as of 2024-10.
+    property webkitLineClamp deprecated=""
+  }
 }

src/build/patches.ts

@@ -415,6 +415,9 @@ function convertForRemovals(obj: unknown): unknown {
     // Replace empty objects with null
     return Object.keys(newObj).length === 0 ? null : newObj;
   }
+  if (obj === "") {
+    return null;
+  }
   return obj;
 }