[skip ci] Fix optComputeAssertionGen dump newline.

[sandreenko]

Before we were printing it like:

In BB03 New Global ArrBnds  Assertion: (0, 0) ($0,$0) [idx: {PhiDef($1, $2, $240)};len: {ARR_LENGTH($200)}] in range  index=#04, mask=0000000000000008
          <- extra new line here.
BB01 valueGen = 0000000000000000
BB02 valueGen = 0000000000000002 => BB06 valueGen = 0000000000000001,
BB03 valueGen = 000000000000000C
BB04 valueGen = 0000000000000000
BB05 valueGen = 0000000000000000
BB06 valueGen = 0000000000000000AssertionPropCallback::StartMerge: BB01 in ->  
0000000000000000 <- no newline here.

[sandreenko]

Looks like [skip ci] in the PR title doesn't work in that repo, cc @dotnet/runtime-infrastructure

Do we have a new way to skip running tests on PRs that do not need them?

[safern]

This seems to be specific for continuous integration builds not for PR builds.

https://docs.microsoft.com/en-us/azure/devops/pipelines/build/triggers?view=azure-devops&tabs=yaml#skipping-ci-for-individual-commits

Maybe it has to be part of the commit message?

[sandreenko]

Thanks @safern, I will try to do that in the next PR.

[briansull]

LGTM