T1329677 DataGrid - Column width changes are not applied immediately

[nightskylark]

Fixes a DataGrid bug: when columnAutoWidth is enabled, changing a column's width via columnOption('field', 'width', N) at runtime is silently ignored — the column keeps its previously auto-fitted width until an explicit repaint()/reinit() is triggered.

Bug

1. columnAutoWidth's best-fit measurement pass caches the measured width into the column's internal visibleWidth option (m_grid_view.ts _setVisibleWidths).
2. Rendering resolves the effective width as column.visibleWidth || column.width (m_columns_view.ts _columnOptionChanged).
3. A subsequent columnOption(field, 'width', N) call only updates width — the stale visibleWidth is never invalidated, so the new width has no visible effect until a full repaint recomputes column state from scratch.

Fix

packages/devextreme/js/__internal/grids/grid_core/columns_controller/m_columns_controller_utils.ts:

• Added isVisibleWidthChangePendingForColumn and invalidateStaleVisibleWidth helpers.
• columnOptionCore now clears a stale column.visibleWidth whenever width is set explicitly, unless a visibleWidth change for the same column is already pending in the current (not yet fired) _columnChanges batch.

The "pending batch" check preserves the drag-resize flow in m_columns_resizing_reordering.ts (setColumnWidth's ratio-adapt branch), which intentionally sets visibleWidth and width together in the same batch for instant visual feedback while dragging — that pairing must not be broken. External/API-driven calls (the reported bug, and the AI-assistant columnsResizeCommand) have no such pending pairing, so their stale visibleWidth is correctly cleared.