chore: remove legacy mdx artifacts and dependencies

src/payload/utils/lexicalParser.ts

@@ -7,7 +7,7 @@ function propValue(chunk: string, prop: string): string {
   // Match prop="value" or prop='value' or prop={value}
   // and also multiline props like prop={\n  [\n    {...}\n  ]\n}
   // For arrays or complex objects passed as props, basic regex might fail,
-  // but the MDX in klz-cables usually uses simpler props or children.
+  // but the Markdown in klz-cables usually uses simpler props or children.
   const match =
     chunk.match(new RegExp(`${prop}=["']([^"']+)["']`)) ||
     chunk.match(new RegExp(`${prop}=\\{([^}]+)\\}`));
@@ -20,7 +20,7 @@ function extractItemsProp(chunk: string, startTag: string): any[] {
   if (itemsMatch) {
     try {
       const arrayString = itemsMatch[1].trim();
-      // Since klz-cables MDX passes pure JS object arrays like `items={[{title: 'A', content: 'B'}]}`,
+      // Since klz-cables Markdown passes pure JS object arrays like `items={[{title: 'A', content: 'B'}]}`,
       // parsing it via Regex to JSON is extremely brittle due to unquoted keys and trailing commas.
       // Using `new Function` safely evaluates the array AST directly in this Node script environment.
       const fn = new Function(`return ${arrayString};`);
@@ -225,7 +225,7 @@ export function parseMarkdownToLexical(markdown: string): any[] {
     },
   ];
 
-  function cleanMdxContent(text: string): string {
+  function cleanMarkdownContent(text: string): string {
     return text
       .replace(/<section[^>]*>/g, '')
       .replace(/<\/section>/g, '')
@@ -238,7 +238,7 @@ export function parseMarkdownToLexical(markdown: string): any[] {
       .trim();
   }
 
-  content = cleanMdxContent(content);
+  content = cleanMarkdownContent(content);
 
   const placeholders = new Map<string, any>();
   let placeholderIdx = 0;