Add SKIPIF for ZendMM for observer_fiber_functions_03.phpt

This test uses memory_limit, so it fails when using USE_ZEND_ALLOC=0.

Run one testsuite with observers enabled in CI (#13869)

Signed-off-by: Bob Weinand <bobwei9@hotmail.com>

Add proper handling to observe functions in fibers

The current_observed_frame is carried along the fiber context and thus always correct now.

Signed-off-by: Bob Weinand <bobwei9@hot

Add proper handling to observe functions in fibers

The current_observed_frame is carried along the fiber context and thus always correct now.

Signed-off-by: Bob Weinand <bobwei9@hotmail.com>

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