feat: remove default axis override when custom id is given

[dangreen]

Closes #10190

[LeeLenaleee]

Migration guide needs an update

[dangreen]

@LeeLenaleee

so this example

Chart.js/test/fixtures/core.scale/ticks/rotated-long.js

Lines 19 to 28 in 74f50df

	scales: {
	bottom: {
	type: 'category',
	position: 'bottom'
	},
	top: {
	type: 'category',
	position: 'top'
	}
	}

now should look like

      scales: {
        x: {
          type: 'category',
          position: 'bottom'
        },
        top: {
          type: 'category',
          position: 'top'
        }
      }

is it ok?

[LeeLenaleee]

Yes