Expose zendi_try_get_long() function via a public API

[Girgias]

We probably should be exposing zendi_try_convert_scalar_to_number() as well as this would make the implementation of #10161 slightly easier because I find it kinda insane that the APIs we provide to get certain types just blindly accept arrays and non-representable objects by making them return somewhat arbitrary values even though for int/float we consider this UB.

[Girgias]

Erf seem there are still some issues with clean sections on IO tests after I added some:

BORK file() on a path containing .. and .
array(3) {
  [0]=>
  string(7) "Line 1
"
  [1]=>
  string(7) "Line 2
"
  [2]=>
  string(6) "Line 3"
}
file() on a path containing .. with invalid directories
array(3) {
  [0]=>
  string(7) "Line 1
"
  [1]=>
  string(7) "Line 2
"
  [2]=>
  string(6) "Line 3"
}
file() on a relative path from a different working directory
array(3) {
  [0]=>
  string(7) "Line 1
"
  [1]=>
  string(7) "Line 2
"
  [2]=>
  string(6) "Line 3"
} [C:\projects\php-src\ext\standard\tests\file\file_variation5-win32.phpt] reason: invalid output from CLEAN
=====================================================================
TIME END 2022-12-28 17:05:44

[iluuu1994]

LGTM