internal: Generalize make::expr_from_text to types which implement Into<ast::Expr>

This will help with specializing the various `make::expr_*` functions later

crates/syntax/src/ast/make.rs

@@ -663,7 +663,7 @@ pub fn expr_tuple(elements: impl IntoIterator<Item = ast::Expr>) -> ast::Expr {
 pub fn expr_assignment(lhs: ast::Expr, rhs: ast::Expr) -> ast::Expr {
     expr_from_text(&format!("{lhs} = {rhs}"))
 }
-fn expr_from_text(text: &str) -> ast::Expr {
+fn expr_from_text<E: Into<ast::Expr> + AstNode>(text: &str) -> E {
     ast_from_text(&format!("const C: () = {text};"))
 }
 pub fn expr_let(pattern: ast::Pat, expr: ast::Expr) -> ast::LetExpr {