timeout: take the minimum expiration time of pathSegments

[glazychev-art]

Description

The previous implementation took into account only the previous segment. This is mistake. For example: NSC (1min) ---> NSMgr (5min) ---> Fwd (5min) --->... If NSC and NSMgr die, then the Fwd timeout will work only after 5 minutes. But authorize policies look at the whole path, so an error will occur when closing (the client token has already expired).

Issue link

https://github.com/networkservicemesh/deployments-k8s/issues/8882

How Has This Been Tested?

• [x] Added unit testing to cover
• [x] Tested manually
• [ ] Tested by integration testing
• [ ] Have not tested

Types of changes

• [x] Bug fix
• [ ] New functionality
• [ ] Documentation
• [ ] Refactoring
• [ ] CI

[codecov[bot]]

Codecov Report

:exclamation: No coverage uploaded for pull request base (main@2502d93). Click here to learn what that means. Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1439   +/-   ##
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  Coverage        ?   70.28%           
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  Files           ?      242           
  Lines           ?    11006           
  Branches        ?        0           
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  Hits            ?     7736           
  Misses          ?     2770           
  Partials        ?      500           

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