BUGFIX: Dont initialize $currentContentStreamId by default in behat tests

[mhsdesign]

Related #5034

With #5040
the step I am in the active content stream of workspace "live" was turned into I am in workspace "live".

That is problematic as the step

 And I am in workspace "live"

now hardcodes the $currentContentStreamId making assertions after changing the workspaces content stream (publish or discard) seem at first broken.

A current workaround is to repeat the step after discarding for example:

When the command DiscardWorkspace is executed with payload:
  | Key           | Value         |
  | workspaceName | "user-editor" |
# FIXME we have to reevaluated the step as we cache the $currentContentStreamId and it will be outdated after the discard
And I am in workspace "user-editor" and dimension space point {}
Then I expect node aggregate identifier "text-node-middle" to lead to no node

... but all test pass after these adjustments so id say we dont need the hack in the first place.

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• Code follows the PSR-2 coding style
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[grebaldi]

👍 by 👀

[pKallert]

Looks good 👍 I did not check all occurences (but most of them) but I guess it also will not break any tests where it is currently used 🙂