Grid mark doesn’t use its corresponding axis’ ticks

The documentation for the grid mark states:

The optional data is an array of tick values — it defaults to the scale’s ticks.

The following example reproduces a case in which the grid mark ignores the scale’s ticks and instead produces its own:

Plot.plot({
  x: {
    domain: [new Date(2026, 2, 9).valueOf(), new Date(2026, 2, 11).valueOf()],
    ticks: ['2026-03-09','2026-03-10','2026-03-11']
      .map(d => new Date(d).valueOf()),
  },
  marks: [
    Plot.gridX(),
  ],
})

Start with the Plot.gridX() entry point and the grid mark documentation linked in the issue. Run the provided date-axis example and trace how the corresponding axis ticks are selected. Done means the grid mark uses the axis’s configured ticks in this case while preserving explicit grid data behavior.