luci-app-ddns: fix toggle state button

[Try2079]

• This PR is not from my main or master branch 💩, but a separate branch ✅
• Each commit has a valid ✒️ Signed-off-by: <my@email.address> row (via git commit --signoff)
• Each commit and PR title has a valid 📝 <package name>: title first line subject for packages
• Incremented 🆙 any PKG_VERSION in the Makefile
• Tested on: (x86_64, v23.05.5, chrome) ✅
• ( Preferred ) Mention: @systemcrash
• ( Preferred ) Screenshot or mp4 of changes:
• ( Optional ) Closes: luci-app-ddns: Toggle Button Won't Work. #7423#issuecomment-2498227219
• Description: Fixed toggle state button. This is my first time using pull request on github. Please forgive me if there is anything wrong.

[systemcrash]

See 8d26279. This might close this issue.

[Try2079]

I think it won't work. Because this.callInitAction() only return true, it never return false.

# sys.lua
local function init_action(action, name)
	name = fs.basename(name)
	if fs.access(init.dir..name) then
		return call("env -i %s%s %s >/dev/null" %{ init.dir, name, action })
	end
end

// luci
setInitAction: {
	args: { name: 'name', action: 'action' },
	call: function(request) {
		switch (request.args.action) {
		case 'enable':
		case 'disable':
		case 'start':
		case 'stop':
		case 'restart':
		case 'reload':
			const rc = init_action(request.args.name, request.args.action);

			if (rc === false)
				return { error: 'No such init script' };

			return { result: rc == 0 };

		default:
			return { error: 'Invalid action' };
		}
	}
},