Refactor markup render system (#32589)

This PR mainly moves some code and introduces `RenderContext.WithXxx`
functions

modules/markup/markdown/goldmark.go

@@ -79,7 +79,7 @@ func (g *ASTTransformer) Transform(node *ast.Document, reader text.Reader, pc pa
 				// TODO: this was a quite unclear part, old code: `if metas["mode"] != "document" { use comment link break setting }`
 				// many places render non-comment contents with no mode=document, then these contents also use comment's hard line break setting
 				// especially in many tests.
-				markdownLineBreakStyle := ctx.Metas["markdownLineBreakStyle"]
+				markdownLineBreakStyle := ctx.RenderOptions.Metas["markdownLineBreakStyle"]
 				if markup.RenderBehaviorForTesting.ForceHardLineBreak {
 					v.SetHardLineBreak(true)
 				} else if markdownLineBreakStyle == "comment" {