Fix clang-format violations in exporter UI changes

[Copilot]

The Formatting Check GitHub Actions job was failing on UI/file/exporter.cpp after the recent exporter cleanup changes. The failure was caused by line wrapping that did not match the repository's clang-format rules.

• Formatting-only correction

  • Reflowed the newly added DropDownPane::Create(...) call to match the repository's expected wrapping.
  • Reflowed the GetConversionToEMLOptions(...) and ExportIMessageToEML(...) calls in the EML export path to the same style.

• Scope

  • No functional changes.
  • Keeps the exporter cleanup intact while making the file pass the existing formatting gate.

MyData.AddPane(viewpane::DropDownPane::Create(
	0, IDS_FORMATTOSAVEMESSAGE, static_cast<ULONG>(uidDropDown.size()), uidDropDown.data(), true));

hRes = EC_H(ui::mapiui::GetConversionToEMLOptions(
	pParentWnd, &ulConvertFlags, &et, &mst, &ulWrapLines, &bDoAdrBook));