Fix: Switch the default theme from light mode to dark mode and improve some styles #9869 (#10552)

### What problem does this PR solve?

Fix: Switch the default theme from light mode to dark mode and improve
some styles #9869
-Update UI component styles such as input boxes, tables, and prompt
boxes
-Optimize login page layout and style details
-Revise some of the wording, such as uniformly changing "data flow" to
"pipeline"
-Adjust the parser to support the markdown type

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/pages/dataflow-result/components/parse-editer/index.tsx

@@ -44,7 +44,7 @@ const FormatPreserveEditor = ({
         />
       )}
 
-      {['text', 'html'].includes(initialValue.key) && (
+      {['text', 'html', 'markdown'].includes(initialValue.key) && (
         <ObjectContainer
           isReadonly={isReadonly}
           className={className}

web/src/pages/dataflow-result/parser.tsx

@@ -194,7 +194,7 @@ const ParserContainer = (props: IProps) => {
 
         <div
           className={cn(
-            ' border rounded-lg p-[20px] box-border w-[calc(100%-20px)] overflow-auto scrollbar-none',
+            ' border rounded-lg p-[20px] box-border w-[calc(100%-20px)] overflow-auto scrollbar-auto',
             {
               'h-[calc(100vh-240px)]': isChunck,
               'h-[calc(100vh-180px)]': !isChunck,