error parsing lifetime following by Sized and message + between them

detect the pattern at the general site parse_impl_ty()
this will fix #102598

compiler/rustc_parse/src/parser/item.rs

@@ -2449,7 +2449,6 @@ impl<'a> Parser<'a> {
             };
             let (pat, ty) = if is_name_required || this.is_named_param() {
                 debug!("parse_param_general parse_pat (is_name_required:{})", is_name_required);
-
                 let (pat, colon) = this.parse_fn_param_pat_colon()?;
                 if !colon {
                     let mut err = this.unexpected::<()>().unwrap_err();