Determine default filterFn by first non-null-value of a column, instead of first row.

[wuarmin]

Hey,

here's the code of filterFn determination:

table/packages/table-core/src/features/Filters.ts

Line 206 in ac48ff7

getAutoFilterFn: () => {

The filter function is set, based on the 1st column value. What do you think of setting it based on the 1st non-null column-value.

I have cases, where the server responds with null-values and strings. If the 1st row contains such a null value, the filter will not work.

If you are interested, I could provide a PR.

Thanks and best regards