drm/i915: Always initialize connector->modeset_retry_work

drm/i915: Always initialize connector->modeset_retry_work

Since we have all the necessary bits in intel_connector.c might
as well always initialize the modeset_retry_work for every connector.
Avoids yet another init function you have to remember to call.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250213150220.13580-3-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>