operators: handle errors in other for withLatestFrom

[twittemb]

Description

This PR improves the error management for withLatestFrom when the other sequence fails.

Checklist

• this PR is based on the main branch and is up-to-date, if not please rebase your branch on the top of main
• the commits inside this PR have explicit commit messages
• unit tests cover the new feature or the bug fix
• the feature is documented in the README.md if it makes sense
• the CHANGELOG is up-to-date

[codecov-commenter]

Codecov Report

Merging #14 (db10b3f) into main (0aafcc4) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #14      +/-   ##
==========================================
- Coverage   97.49%   97.49%   -0.01%     
==========================================
  Files          50       50              
  Lines        2433     2471      +38     
==========================================
+ Hits         2372     2409      +37     
- Misses         61       62       +1     

Impacted Files	Coverage Δ
...urces/Operators/AsyncSequence+SwitchToLatest.swift	100.00% <ø> (ø)
...urces/Operators/AsyncSequence+WithLatestFrom.swift	100.00% <100.00%> (ø)
.../Operators/AsyncSequence+WithLatestFromTests.swift	100.00% <100.00%> (ø)
.../Operators/AsyncSequence+SwitchToLatestTests.swift	94.11% <0.00%> (-1.48%)	⬇️

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