fix: fix infering int and float literal in generic fn calls (#9287)

vlib/v/checker/check_types.v

@@ -443,7 +443,7 @@ pub fn (mut c Checker) infer_fn_types(f table.Fn, mut call_expr ast.CallExpr) {
 			arg := call_expr.args[arg_i]
 			param_type_sym := c.table.get_type_symbol(param.typ)
 			if param.typ.has_flag(.generic) && param_type_sym.name == gt_name {
-				typ = arg.typ
+				typ = c.table.mktyp(arg.typ)
 				break
 			}
 			arg_sym := c.table.get_type_symbol(arg.typ)

vlib/v/tests/generic_fn_infer_test.v

@@ -19,6 +19,15 @@ fn test_explicit_calls_should_also_work() {
 	assert true
 }
 
+fn get_type_name<T>(x T) string {
+	return T.name
+}
+
+fn test_literal() {
+	assert get_type_name(1) == 'int'
+	assert get_type_name(1.0) == 'f64'
+}
+
 //
 fn choose4<T>(a T, b T, c T, d T) T {
 	// NB: a similar construct is used in prime31's via engine