DITM doesn't work with URLs with ports

[KwanEsq]

STR:

$ mkdir ditm-test 
$ cd ditm-test
$ echo 'Hello world' > test.txt
$ python -m SimpleHTTPServer 8080

• Open localhost:8080/test.txt in Firefox
• Open DITM
• Select http://localhost:8080/test.txt from "Used" <select>
  • It never loads
• Type "Goodbye world" into textarea
• Hit save
• Reload page
  • Content is still "Hello world"

This is because "host must not include a port number" in match patterns, but the URLs are used as-is in the listener

ditm/background.js

Lines 57 to 71 in dded760

	const urls = Object.keys(files);
	if (loadingURL) {
	urls.push(loadingURL);
	}
	if (urls.length === 0) {
	return;
	}
	await browser.webRequest.onBeforeRequest.addListener(
	filterRequest,
	{
	urls,
	},
	["blocking"]
	);

PR incoming.