Enable odin check examples/all for JS.

core/time/timezone/tz_js.odin

@@ -0,0 +1,13 @@
+#+build js
+#+private
+package timezone
+
+import "core:time/datetime"
+
+local_tz_name :: proc(allocator := context.allocator) -> (name: string, success: bool) {
+	return
+}
+
+_region_load :: proc(_reg_str: string, allocator := context.allocator) -> (out_reg: ^datetime.TZ_Region, success: bool) {
+	return nil, true
+}