coretasks: make URL handling respect per-channel config

[dgw]

We removed the unblockable status from handle_url_callbacks() in #1806, so it will respect the ignored status of users matching entries in the block list (.blocks command set). We should further enhance this function so certain URL handlers (plugins or specific callables) can be disabled using the per-channel settings introduced by #1235.

URL callable handling directly invokes the matching function:

sopel/sopel/coretasks.py

Lines 1009 to 1012 in c5cffdb

	for function, match in bot.search_url_callbacks(url):
	# trigger callback defined by the `@url` decorator
	if hasattr(function, 'url_regex'):
	function(bot, trigger, match=match)

Normal callable handling goes through bot.call(), which enforces per-channel restrictions:

sopel/sopel/bot.py

Lines 565 to 585 in c5cffdb

	# if channel has its own config section, check for excluded plugins/plugin methods
	if trigger.sender in self.config:
	channel_config = self.config[trigger.sender]
	# disable listed plugins completely on provided channel
	if 'disable_plugins' in channel_config:
	disabled_plugins = channel_config.disable_plugins.split(',')
	# if "*" is used, we are disabling all plugins on provided channel
	if '*' in disabled_plugins:
	return
	if func.__module__ in disabled_plugins:
	return
	# disable chosen methods from plugins
	if 'disable_commands' in channel_config:
	disabled_commands = literal_eval(channel_config.disable_commands)
	if func.__module__ in disabled_commands:
	if func.__name__ in disabled_commands[func.__module__]:
	return

[dgw]

Closing as fixed by #1845.