Company forms layout alignment

[anonymoususer72041]

Summary

This Pull Request applies a small set of layout refactors to the company add and edit forms to better align them with the existing contact (and candidate) layouts.

Motivation

• The company edit layout was already problematic: the original markup caused the "Other" section to be overlapped by the right-hand panel (see PR Fix "Other" section overlap on company edit page #673). While that bug is fixed there, the remaining layout was still slightly inconsistent with the contact edit template.
• The contact (and candidate) add/edit templates already provide a consistent and cleaner layout pattern for "Basic Information" + "Other". Visually they fit better with the rest of the application than the old company layouts.
• Instead of introducing yet another pattern or preserving a broken one, the company forms are aligned to the already stable contact/candidate layouts. This keeps the UI and the templates more consistent and easier to maintain going forward.
• Larger refactors of the company add form (e.g. rethinking the address fields themselves) are intentionally out of scope for this PR to keep the change focused and reviewable.