$mol_view_tree2_to_dts tests and fixes

[zerkalica]

nullable

$mol_view_tree2_to_js_test_ex_simple_typed_null_foo $mol_object
	a null string|number

right chain

$mol_view_tree2_to_js_test_ex_right_hierarchy_foo $mol_object
	Indexed* $mol_view_tree2_to_js_test_ex_right_hierarchy_bar
		title? => indexed_title*?
		id <= indexed_id* 0
	prj $mol_view_tree2_to_js_test_ex_right_hierarchy_bar
		domain* => prj_domain*
			user => prj_user*
				id => prj_user_id*

typed dict values

$mol_view_tree2_to_js_test_ex_array_of_array_or_object_foo $mol_object
	complex /
		\1
		/
			true
		/
			\1
			21
		*number|string
			a 1
			str \some

generics

$mol_view_tree2_to_js_test_ex_array_constructor_tuple_foo $mol_object
	blobs /
		<= text_blob? $mol_view_tree2_to_js_test_ex_klass_tuple<string> /
			/string
				<= text \123
			* type \text/plain