Deprecate asFileName and re-write system senders

[hernanmd]

As reported in #16123, this PR should be applied along with the PR in NewTools-Fuel. It is a small PR to clean dependencies which could bring problems when removing old FileList.

Note that FileList senders were not re-written as it is planned to be deprecated too.

[guillep]

If you ask me (which you did not :P) I'd simply remove the calls to asFileName.
It's implementation is super weird: it (sometimes!) rewrites the paths! This could hide application bugs and make me developer think I'm opening a file here but actually opening a file there.

Also, for the file too long or invalid paths, we are already validating that (it's the OS when we open the file haha !)

My take

• I'd not inline the implementation anywhere.
• I'd just deprecate the method, not use it anymore, remove it next version
• people should provide correct file paths, and we should provide nice errors to help them find bugs

Thoughts?

[hernanmd]

Yes, this PR already moves the method to Deprecated12.

It seems this method comes from the ages of Squeak, I've found a single user (CodeExporter) and it lacks testing.
So next step I will add tests and then re-implement the method to see that without asFileName still is green.

[jecisc]

Now the result is different:

FLFuelOutTests
 ✗ #testFuelOutWriteArrayFile (2ms)
TestFailure: Assertion failed
FLFuelOutTests(TestAsserter)>>assert:description:resumable:
FLFuelOutTests(TestAsserter)>>assert:description:
FLFuelOutTests(Object)>>assert:
FLFuelOutTests>>testFuelOutWriteArrayFile ...assert: fileName asFileReference exists
FLFuelOutTests(TestCase)>>performTest
 ✗ #testFuelOutWriteFileVersioned (6ms)
TestFailure: Assertion failed
FLFuelOutTests(TestAsserter)>>assert:description:resumable:
FLFuelOutTests(TestAsserter)>>assert:description:
FLFuelOutTests(Object)>>assert:
FLFuelOutTests>>testFuelOutWriteFileVersioned ...assert: fileName asFileReference exists
FLFuelOutTests(TestCase)>>performTest
 ✗ #testFuelOutWriteFile (1ms)
TestFailure: Assertion failed
FLFuelOutTests(TestAsserter)>>assert:description:resumable:
FLFuelOutTests(TestAsserter)>>assert:description:
FLFuelOutTests(Object)>>assert:
FLFuelOutTests>>testFuelOutWriteFile ...assert: fileName asFileReference exists
FLFuelOutTests(TestCase)>>performTest

[hernanmd]

I saw now the failures seems not related (@jecisc can you confirm?)

osx-64 / Tests-osx-64 / testExternalIDEDependencies – MacOSX64.System.DependenciesTests.SystemDependenciesTest7s
unix-64 / Tests-unix-64 / testExternalIDEDependencies – Unix64.System.DependenciesTests.SystemDependenciesTest10s
osx-64 / Tests-osx-64 / testFlushOtherEndClosed – MacOSX64.Network.Tests.SocketStreamTest7s
unix-64 / Tests-unix-64 / testFlushLargeMessageOtherEndClosed – Unix64.Network.Tests.SocketStreamTest

[jecisc]

Yes. But I've seen failures in the NewTools PR I think

[Ducasse]

For P13