Add JIT guards for INIT_FCALL instructions and functions that may be modified

For methods we reuse mechanism of polymorphic calls.
For regular function we invalidate the whole root trace

Add JIT guards for INIT_FCALL instructions and functions that may be modified

For methods we reuse mechanism of polymorphic calls.
For regular function we invalidate the whole root trace.

This fixes https://github.com/php/php-src/issues/8461

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