refs 22648 Acknowledge change if removed in KeepAll mode

[EugenioCollado]

on_unacknowledged_sample_removed callback is called when best effort writer with keep all history is used, when the history was full but before max_blocking_time a sample was acknowledged, as is_acked was checked before the waiting time, and is not re-checked. This should not happen, as keep all should never drop an unacknowledged sample.

@Mergifyio backport 3.1.x 3.0.x 2.14.x 2.10.x

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