strpos($a, $b) which compares with FALSE or 0 should replace with str_contains($a, $b) or str_starts_with($a, $b) if possible

Problem/Motivation

In Drupal core, strpos() which compares with FALSE or 0 is already replaced in #3324560: Replace strpos/substr with str_starts_with() / str_contains() / str_ends_with(). Now str_contains() and str_starts_with() can use since PHP 8 so module supporting Drupal 10+ can replace these code.

Proposed resolution

strpos($a, $b) compares with FALSE or 0 replace like following list if possible.

1. strpos($a, $b) !== FALSE replace with str_contains($a, $b)
2. strpos($a, $b) === FALSE replace with !str_contains($a, $b)
3. strpos($a, $b) === 0 replace with str_starts_with($a, $b)
4. strpos($a, $b) !== 0 replace with !str_starts_with($a, $b)

Remaining tasks

TBD

User interface changes

API changes

Data model changes