bug#61617: M-x mark-defun doesn't work correctly in tree-sitter modes when comments exist between functions

[Evgeni Kolev]

Sorry, I have a typo in my Go example, the point in the code is "I"
(capital i), instead of "|" (pipe). The Rust example is OK.

Fixed steps to reproduce for go-ts-mode:

To reproduce:
1. with the following code in go-ts-mode, "|" is the point (in function sum2)
```
package main

func sum(a, b int) int {
    return a + b
}

// comment
func sum2(a, b int) int {
    |return a + b
}
```
2. Execute M-x mark-defun
3. The region selected is wrong - the empty line between the two
functions is marked. I expect only function sum2 and the preceding
comment to be marked.