Pressing Home and End keys in grid doesn't navigate but starts editing

[mghie]

Pressing Ctrl+Home and Ctrl+End scrolls to the very first and very last cells respectively, but without the Ctrl editing starts (and inserts "weird" characters), which is unexpected.

Can be observed in the grid sample, for example in the big virtual grid.

[vadz]

Thanks for reporting, I'll add handling for these keys in wxGrid itself but the real problem is that wx sends wxKeyEvents with nonsensical values for m_uniChar in the first place. This will have to be fixed too, I'll post to wx-dev about this.

[VZ]

(In [64917]) Make Home and End keys work as expected in wxGrid.

Go to the first/last cell of the current row when they're pressed instead of
starting the editor.

Closes #12222.