fix: show image duration

[CKY-]

Description of the Change

the enter duration would allow for 0.25 where the rest of the durations would enforce a min of 1 second this enforces a min of 1 second if less then 1 second is needed there is a millisecond setting

Applicable Issues

#2509

Testing

i have tested this by creating a show image effect and setting the enter, in-between and exit animation times to less than 1 second the durations are then all changed to 1 second

Screenshots