perf(property-list): memoize property list computations

[YaronZaki]

Summary

Memoizes the row-chunking computation in the PropertyList component so the visible listings are sliced out of the source array once per data change rather than on every render. This removes repeated array work from a component that sits directly in the search results render path.

Problem

VirtualizedPropertyGrid derived its row count with Math.ceil and then called properties.slice(...) again for every virtual row inside the render loop. Both calculations were re-executed on each render - including renders caused by unrelated filter, sort or pagination state - even though the property array and column count had not changed.

Changes Made

• Replaced the inline row count and per-row slicing in src/components/VirtualizedPropertyGrid.tsx with a useMemo that chunks properties into rows keyed on [properties, columns].
• Passed
  ows.length to useVirtualizer as the row count, which is numerically identical to the previous Math.ceil result.
• Read itemsInRow directly from the memoized
  ows array inside the virtual row map.

Implementation Details

The memoized chunk array is rebuilt only when the properties array reference or the measured column count changes, so scrolling and re-rendering now index into an existing structure. The fallback
ows[virtualRow.index] ?? [] keeps rendering safe if the virtualizer briefly reports an index beyond the current chunk list.

Closes #1186

Closes #1185

Closes #1184

Closes #1183

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[nanaf6203-bit]

LGTM