fix 'exipres', 'expire_seconds' not working normal as expected

[x-7]

related issuses:

• When schedule expires should it not disable the schedule? last run count in this case always keep on increasing #240
• PeriodicTask.expire_seconds not work. #592

this pr fix issue 240, not 592,beacuse fix 592 need to caulate expire_time by expire_senconds,but i dont know how to caulate it with none start_time

[auvipy]

the tests are failing, please add new tests to verify the proposed changes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.20%. Comparing base (e3c1ade) to head (4c2d731).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #816      +/-   ##
==========================================
+ Coverage   86.81%   87.20%   +0.39%     
==========================================
  Files          32       32              
  Lines         933      938       +5     
  Branches       74       76       +2     
==========================================
+ Hits          810      818       +8     
+ Misses        105      102       -3     
  Partials       18       18              

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