febf960 introduced a regression, in that it caused `smartparens-mode' to
no longer be enabled for `evil-ex'. This is because the latter doesn't
call `read--expression', but calls the minibuffer directly instead.
Return `doom-init-smartparens-in-minibuffer-maybe-h', enabling
`smartparens' for `evil-ex'. The hook responsibly for enabling it in
`eval-expression-minibuffer-setup-hook' was renamed to
`doom-init-smartparens-in-eval-expression-h', since otherwise the naming
would have been awkward.
Also explicity enable `smartparens-mode' instead of toggling it.
61135f5374