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This reverts commit 1915c9f0.

This reverts commit 4d9a3f42, reversing
changes made to ecf9c145.

Signed-off-by: Rémy Coutable <remy@rymai.me>

When the Gitaly call failed, the exception handling failed
because `method` is expected to have a parameter.

Closes #49096

This reverts merge request !20140

Discussions were being toggled by jquery DOM querying them and toggling
visibility but in vue, only the open discussions will be in the DOM
Fix includes:
 - Adds a getter to the store to get the expanded discussions
 - Adds an action to collapse a discussion
 - When the user clicks the button, all data needed is now accessible
   through a getter and we can dispatch an action to toggle the discussion
   within the state, instead of showing/hiding with jQuery
 - Removes hardcoded properties

Resolves #48237

Removes double export for actions in diffs module in mr refactor

Previously we would pull the file, now, we just stream-it as needed from Object Storage

This updates only the actual new discussion and not the full tree , which leads to a very costly full rerender

Also update the hook logs to escape the contents properly, as the :plain
filter does not do html escaping.

We saw in production that DispatchWorker was running about twice an hour,
which would schedule twice as many jobs as it should.

For some reason, BatchWorker was running 1000 times per hour, possibly
due to Sidekiq RSS kills that caused these jobs to restart.

Adding an ExclusiveLease prevents these jobs from running more
than they should.

Relates to https://gitlab.com/gitlab-com/infrastructure/issues/4526

Detailed: Because of rewire we need to export a default empty object in our actions to prevent it to export the wrong default in karma. Vuex getters are global, and because the Vuex store uses several non namespaced moduled, there was already a getter named default, due to the same empty export.
In order to solve it I chose to namespace the module. Could also be fixed by importing the getters explicitly instead of all of them.