Demote exit transition timeout error to warning

[martenole]

No description provided.

[github-actions]

REQUEST FOR PRODUCTION RELEASES:
To request your PR to be included in production software, please add the corresponding labels called "async-" to your PR. Add the labels directly (if you have the permissions) or add a comment of the form (note that labels are separated by a ",")

+async-label <label1>, <label2>, !<label3> ...

This will add <label1> and <label2> and removes <label3>.

The following labels are available
async-2023-pbpb-apass
async-2023-pp-apass1
async-2022-pp-apass6-2023-PbPb-apass2
async-2022-pp-apass4
async-2022-pp-apass4-accepted
async-2022-pp-apass6-2023-PbPb-apass2-accepted
async-2023-pbpb-apass-accepted
async-2023-pp-apass1-accepted

[alibuild]

Error while checking build/O2/fullCI for 1248045 at 2024-04-17 13:06:

## sw/BUILD/O2-latest/log
c++: error: unrecognized command-line option '--rtlib=compiler-rt'
c++: error: unrecognized command-line option '--rtlib=compiler-rt'
/sw/SOURCES/O2/13036-slc8_x86-64/0/Framework/Foundation/include/Framework/Signpost.h:525:18: error: 'warn' was not declared in this scope; did you mean 'fair::Severity::warn'?
/sw/SOURCES/O2/13036-slc8_x86-64/0/Framework/Foundation/include/Framework/Signpost.h:525:3: error: 'O2_RAW_LOG_RAW' was not declared in this scope
ninja: build stopped: subcommand failed.

Full log here.

[alibuild]

Error while checking build/O2/fullCI for d0e87d7 at 2024-04-22 22:27:

## sw/BUILD/O2-latest/log
c++: error: unrecognized command-line option '--rtlib=compiler-rt'
c++: error: unrecognized command-line option '--rtlib=compiler-rt'

Full log here.