Pass directory path from call-site

[am11]

When init-compiler is sourced (as opposed to eval'd), the script was
throwing an error: pipeline-logging-functions.sh: No such file or directory.

Reflecting changes from dotnet/runtime#59858.

[am11]

cc @jkoritzinsky, @janvorli

[jkoritzinsky]

We might need to make changes in dotnet/diagnostics as well to react to this. Can we solve this problem differently (without making a breaking change for the script)?

[am11]

@jkoritzinsky, dotnet/diagnostics does not use anything from shared location which we have just started to use. It doesn't even use the latest of dotnet/coreclr (it is super old and stale version..).

[am11]

https://github.com/dotnet/diagnostics/blob/c405e7bfbad599b452cdf680207de604df3fed41/eng/gen-buildsys-clang.sh#L23

[am11]

I knew this off-hand, because I already have a WIP branch to close the gap between diagnostics config: dotnet/diagnostics@main...am11:feature/build-infra rejuvenation in progress.. 😉

We may want to share more scripts via eng/common/native between runtime and diagnostics. That's something I will follow up with you, @hoyosjs and @janvorli once I have diagnostics PR up (but it is unrelated to the changes here which only fix a warning in runtime).