cgen: fix const indexexpr dep (fix #24850) (#24851)

Author: felipensp

vlib/v/ast/table.v

@@ -2557,6 +2557,9 @@ pub fn (t &Table) dependent_names_in_expr(expr Expr) []string {
 				names << util.no_dots(expr.name)
 			}
 		}
+		IndexExpr {
+			names << t.dependent_names_in_expr(expr.left)
+		}
 		IfExpr {
 			for branch in expr.branches {
 				names << t.dependent_names_in_expr(branch.cond)

vlib/v/tests/consts/const_indexexpr_dep_test.v

@@ -0,0 +1,7 @@
+const array1 = [1]
+const array2 = [array1]
+const array3 = array2[0]
+
+fn test_main() {
+	assert array3 == array1
+}