PathProcessorLanguage::initProcessors is not sorting the methods by weight

Problem/Motivation

PathProcessorLanguage::initProcessors is not sorting the methods by their weights and so they are called by ::processInbound and ::processOutbound not in a order defined by their weights.

This causes a problem, where one outbound processor might depend on another one or one might want to alter the options array before it is passed to the next outbound processor.

This is what we are doing in our current approach in #1810394: Site configuration with domain based language negotiation results in redirecting authenticated users to a different domain when accessing a content entity route for translation language different from the interface language and thus this issue is a blocker.

Proposed resolution

Sort the methods by weight in PathProcessorLanguage::initProcessors.

Remaining tasks

none

User interface changes

none

API changes

none

Data model changes

none