fix formatting and merging if chains in attributes (#2697)

* fix formatting and merging if chains in attributes

* fix autoformat if attribute chains

* Fix IfAttributeValue ToTokens implementation

---------

Co-authored-by: Jonathan Kelley <jkelleyrtp@gmail.com>

packages/rsx/src/ifchain.rs

@@ -7,7 +7,7 @@ use quote::quote;
 use quote::{ToTokens, TokenStreamExt};
 use syn::{
     parse::{Parse, ParseStream},
-    Expr, ExprIf, Result, Token,
+    Expr, Result, Token,
 };
 
 use crate::TemplateBody;
@@ -138,21 +138,6 @@ impl ToTokens for IfChain {
     }
 }
 
-pub(crate) fn is_if_chain_terminated(chain: &ExprIf) -> bool {
-    let mut current = chain;
-    loop {
-        if let Some((_, else_block)) = &current.else_branch {
-            if let Expr::If(else_if) = else_block.as_ref() {
-                current = else_if;
-            } else {
-                return true;
-            }
-        } else {
-            return false;
-        }
-    }
-}
-
 #[test]
 fn parses_if_chain() {
     let input = quote! {