refactor(recovery-step2): mirror InquiryStep2's spatial-context layout

[yorickdewid]

Summary

Brings RecoveryStep2 in line with the spatial-context layout shipped on InquiryStep2 in #246 / #247 / #249.

• 3-col grid at xl+ (addresses list / form / map), stacks below xl so the form isn't squeezed at midsized viewports.
• Map column with the same sticky positioning + explicit height so Mapbox renders against a real container (not the zero-height landmine from fix(map): make SampleMap actually render (zero-height container) #244).
• Pin click syncs the selected sample → focuses the matching row in the addresses list and the sample form.

Note on PAND keying

Recovery samples store a BAG PAND id (not a gfm- address id). The geocoder's `/api/geocoder/address/:id` route already handles PAND input and returns a representative address with the building centroid, so pin derivation is the same shape as inquiry. Samples whose building lacks geometry simply don't render a pin — same behavior as on the inquiry side.

Test plan

• `pnpm type-check` clean
• `pnpm build` clean
• Verified end-to-end against local API: PAND `NL.IMBAG.PAND.…` resolves through `/api/geocoder/address/:id` and returns a usable address row (centroid happens to be null on the sanitized dev DB; prod has the geom)
• Smoke in dev: open a recovery, navigate to Step 2, add a couple of samples — confirm pins render, clicking a pin focuses the row + form, and the layout stacks cleanly below xl

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