Make manual symmetric transfer for ThenInline

[MBkkt]

Purpose

Related Information

• Design document: ...
• Bench PR: ...

Testing

• This change is a trivial rework or code cleanup without any test coverage.
• This change is already covered by existing tests.
• This PR adds tests that were used to verify all changes.
• There are tests in an external testing repository: ...

[coveralls]

Pull Request Test Coverage Report for Build 3453005458

• 188 of 188 (100.0%) changed or added relevant lines in 18 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

---

Totals
Change from base Build 3357625097:	0.0%
Covered Lines:	1485
Relevant Lines:	1485

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💛 - Coveralls

[codecov]

Codecov Report

Merging #223 (b07f28a) into main (e1da1bc) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main      #223   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           63        64    +1     
  Lines         1414      1485   +71     
=========================================
+ Hits          1414      1485   +71     

Impacted Files	Coverage Δ
include/yaclib/coro/mutex.hpp	100.00% <ø> (ø)
src/lazy/task_impl.cpp	100.00% <ø> (ø)
include/yaclib/algo/detail/base_core.hpp	100.00% <100.00%> (ø)
include/yaclib/algo/detail/core.hpp	100.00% <100.00%> (ø)
include/yaclib/algo/detail/inline_core.hpp	100.00% <100.00%> (ø)
include/yaclib/algo/detail/result_core.hpp	100.00% <100.00%> (ø)
include/yaclib/algo/detail/wait_event.hpp	100.00% <100.00%> (ø)
include/yaclib/algo/wait_group.hpp	100.00% <100.00%> (ø)
include/yaclib/async/detail/future_impl.hpp	100.00% <100.00%> (ø)
include/yaclib/async/detail/promise_impl.hpp	100.00% <100.00%> (ø)
... and 18 more

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