Auto merge of #76160 - scileo:format-recovery, r=petrochenkov

Improve recovery on malformed format call

The token following a format expression should be a comma. However, when it is replaced with a similar token (such as a dot), then the corresponding error is emitted, but the token is treated as a comma, and the parsing step continues.

r? @petrochenkov

tests/ui/issue-3145.rs

@@ -1,3 +1,3 @@
 fn main() {
-    println!("{}" a); //~ERROR expected token: `,`
+    println!("{}" a); //~ERROR expected `,`, found `a`
 }

tests/ui/issue-3145.stderr

@@ -1,7 +1,7 @@
-error: expected token: `,`
+error: expected `,`, found `a`
   --> $DIR/issue-3145.rs:2:19
    |
-LL |     println!("{}" a); //~ERROR expected token: `,`
+LL |     println!("{}" a); //~ERROR expected `,`, found `a`
    |                   ^ expected `,`
 
 error: aborting due to previous error