Change default method of disabling JIT

https://wiki.php.net/rfc/jit_config_defaults
Closes GH-12678

Improve jit tests

Closes GH-12425

Fix test failure for init_fcall_003.phpt without opcache

If opcache isn't loaded, then opcache_invalidate() will fail.
Reproducible when you compile PHP without opcache, or run PHP witho

Fix test failure for init_fcall_003.phpt without opcache

If opcache isn't loaded, then opcache_invalidate() will fail.
Reproducible when you compile PHP without opcache, or run PHP without
opcache loaded, and try to run this test.

Closes GH-11378.

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Fixed GH-11127 (JIT fault)

* Fixed GH-11127 (JIT fault)

* Added test

* Add new line