When using R2dbcTransactionManager, connection will not be released if
it encounters error while doing `afterCleanup` steps. As `afterCleanup`
can use a database connection when doing `setAutoCommit(true)`, it can
fail under some conditions where the connection is not reliable.
This leads to the Connection not being released.
This commit ensures that inner steps of the `doCleanupAfterCompletion`
are protected against errors, logging the errors and continuing the
cleanup until the last step, which releases the connection.
Backport of commit e050c37
See gh-29703
Closes gh-29925
Co-authored-by: Simon Baslé <sbasle@vmware.com>
0851b0f72d