message: Only show full file conflict solver if there are multiple hunks / conflicts
diff: @@ -200,9 +200,10 @@ void _FileWidget::Header::updatePatch(const git::Patch &patch) {
  mEdit->updatePatch(patch, -1);
  auto isConflicted = patch.isConflicted();
  + auto hasMultipleHunks = patch.count() > 1;
  - mOurs->setVisible(isConflicted);
  - mTheirs->setVisible(isConflicted);
  + mOurs->setVisible(isConflicted && hasMultipleHunks);
  + mTheirs->setVisible(isConflicted && hasMultipleHunks);
  mSave->setVisible(mResolution != git::Patch::ConflictResolution::Unresolved);
  mUndo->setVisible(mResolution != git::Patch::ConflictResolution::Unresolved);
  