Bug: table can't be deleted when it has more than one colspan rows

[mrdivyansh]

Lexical version: 0.16.1

Steps To Reproduce

Sample Table

Colspan row 1
Cell a	Cell b	Cell c	Cell d
Colspan row 2

1. Visit https://playground.lexical.dev/
2. Copy and paste the above sample table.
3. Select the table by pressing Cmd+A
4. Press Backspace to delete the selected table.

The current behavior

Clears the table cells

https://github.com/user-attachments/assets/47a8f27b-ec43-4864-98b1-73af52fae8cd

The expected behavior

Deletes the selected content (the table).

[elbotho]

I tried to reproduce this and I think the problem actually occurs if the last row has a merged table cell (no matter how many merged cells there are). Also the selection has to include only the table (usually you have a paragraph before/after). Then I can also reproduce it without copying from your issue.

[etrepum]

No longer reproducible with recent table refactoring