feat(telegram): render blockquotes as native <blockquote> tags (#14608) (#14626)

Merged via /review-pr -> /prepare-pr -> /merge-pr.

Prepared head SHA: 4a967c51f5
Co-authored-by: lailoo <20536249+lailoo@users.noreply.github.com>
Co-authored-by: sebslight <19554889+sebslight@users.noreply.github.com>
Reviewed-by: @sebslight

src/markdown/ir.ts

@@ -24,7 +24,14 @@ type MarkdownToken = {
   attrGet?: (name: string) => string | null;
 };
 
-export type MarkdownStyle = "bold" | "italic" | "strikethrough" | "code" | "code_block" | "spoiler";
+export type MarkdownStyle =
+  | "bold"
+  | "italic"
+  | "strikethrough"
+  | "code"
+  | "code_block"
+  | "spoiler"
+  | "blockquote";
 
 export type MarkdownStyleSpan = {
   start: number;
@@ -578,8 +585,10 @@ function renderTokens(tokens: MarkdownToken[], state: RenderState): void {
         if (state.blockquotePrefix) {
           state.text += state.blockquotePrefix;
         }
+        openStyle(state, "blockquote");
         break;
       case "blockquote_close":
+        closeStyle(state, "blockquote");
         state.text += "\n";
         break;
       case "bullet_list_open":

src/markdown/render.ts

@@ -21,6 +21,7 @@ export type RenderOptions = {
 };
 
 const STYLE_ORDER: MarkdownStyle[] = [
+  "blockquote",
   "code_block",
   "code",
   "bold",