Extends the Admin Cube test tab to exercise hoist-react's new Store.adoptRawData zero-copy mode (xh/hoist-react#4507, resolving xh/hoist-react#4506) alongside the legacy copy path.

Stacked on grid-tester-data-factory-ab - this PR targets that branch, not develop.

Changes

• "Adopt Raw" toggle rebuilds the grid + connected View, reconstructing the Store in the selected mode for A/B comparison.
• Complex-renderer contrast column - verifies both simple- and complex-renderer cells repaint under zero-copy ticks (the primary risk, since the shared row is mutated in place before the new record is built).
• Order-replication multiplier to stress the Cube path at scale (e.g. 60k+ facts).
• Editing gated off in the read-only adopt mode.
• "Measure Mem" GC + heap readout, with an alert and flag guidance when Chrome lacks --js-flags=--expose-gc / --enable-precise-memory-info.

Used to produce the memory/performance A/B figures in the hoist-react PR.

Hoist P/R Checklist

• Caught up with base branch as of last change. (Stacked on grid-tester-data-factory-ab.)
• Added CHANGELOG entry, or determined not required. (Internal admin test harness - not required.)
• Reviewed for breaking changes, added breaking-change label + CHANGELOG if so. (N/A - test harness only.)
• Updated doc comments / prop-types, or determined not required. (N/A.)
• Reviewed and tested on Mobile, or determined not required. (Desktop admin tester.)
• Created Toolbox branch / PR, or determined not required. (This is the Toolbox PR; pairs with Store: opt-in adoptRawData zero-copy mode for connected Cube Views hoist-react#4507.)