Mapper: a reopened project forgets the names of a target mapped from the Search tab #2916

Follow-up to #2909 (Codex's F3.1 on OpenConceptLab/oclmap#102).

A reopened project rebuilds each mapped target from the project file, which holds only its id, display name and URL. oclmap#102 fills in a target's names and match highlight from the row's restored candidates, but a target mapped from the Search tab isn't among them: its grid cell leads with the repository's name, not the input-language name, and its matched name never comes back.

Every save already sends each mapped target's full concept, with its names and search highlight, in the project's matches, and opening a project returns it. oclmap never reads it back, so the first save after a reopen (an autosave included) overwrites it with the stripped target.

Acceptance criteria

• A reopened project restores each mapped target's names and match highlight from its saved matches entry, when that entry is for the same concept.
• Saving a reopened project keeps those names and that highlight in matches.
• A project whose matches entries lack them opens as it does today.

Components: src/components/map-projects/MapProject.jsx (setProjectFromData, onSave).