Change Proposal: Apply `DiamondDSIntegrations` MRT styling automatically to all tables, not just opted-in ones

[zoharma]

What is being proposed?

A wrapper or a component that pre-merges DiamondDSIntegrations.mrtTheme / mrtOptions() so every Material React Table instance in a consuming app picks up DiamondDS styling by default, instead of requiring each call site to use it individually.

Why is this needed?

#249 added DiamondDSIntegrations.mrtTheme / mrtOptions(), but they only apply if a developer remembers to use them into a given useMaterialReactTable call. If they don't, the table silently falls back to MRT's unstyled defaults, with no error or warning, so styling drifts table-by-table across an app instead of being guaranteed by the design system. This was flagged as a follow-up TODO directly in src/themes/DiamondDSIntegrations.ts.

What will change?

• Behaviour: DiamondDS table styling becomes the default for MRT tables rather than opt-in per instance.
• Component props or usage: likely a new hook/wrapper is introduced; existing manual mrtOptions()/mrtTheme spreading should keep working for anyone not yet migrated.
• New component: possibly a thin wrapper around useMaterialReactTable or MaterialReactTable.

Interface changes (if any)

// wraps useMaterialReactTable and merges DiamondDS defaults automatically
const table = useDiamondMaterialReactTable({
  columns,
  data,
  // any options here still override the DiamondDS defaults
});

Breaking change?

• Yes
• No

Additive: existing code that manually uses mrtOptions()/mrtTheme continues to work; the new hook/wrapper is the recommended path going forward.