[php-src] Issue #22777: Deprecate JIT now

Issue: https://github.com/php/php-src/issues/22777
Author: jobs-git

### Description

With lots of issues of JIT, it appears its not being maintained properly, and thus, request to deprecate it. The promise of JIT seems to not been realized and seem to bring in more problem than solutions - just check the Issues section.

With deprecating JIT this will:

- save unnecessary dev time allocated to JIT
- others


### PHP Version

```plain
All
```

### Operating System

All