parser: fix Enum.value when Enum is an imported symbol (#9046)

vlib/v/parser/parser.v

@@ -1391,7 +1391,7 @@ pub fn (mut p Parser) name_expr() ast.Expr {
 		if mod != '' {
 			enum_name = mod + '.' + enum_name
 		} else {
-			enum_name = p.prepend_mod(enum_name)
+			enum_name = p.imported_symbols[enum_name] or { p.prepend_mod(enum_name) }
 		}
 		// p.warn('Color.green $enum_name ' + p.prepend_mod(enum_name) + 'mod=$mod')
 		p.check(.dot)

vlib/v/tests/imported_symbols_test.v

@@ -35,4 +35,5 @@ fn vertex_count(s Shape) int {
 
 fn test_imported_symbols_enums() {
 	assert vertex_count(.triangle) == 3
+	assert vertex_count(Shape.triangle) == 3
 }