[llvm] [lld] [Pass] Add hyphen to some pass names (PR #74287)

[David Blaikie via llvm-commits]

dwblaikie wrote:

Some more words to describe/justify the change might be helpful. (and/or a link to a discourse thread where this has been more broadly discussed) given the churn this would produce, I guess? (& the renamings look sufficiently independent maybe they should be committed separately - though I guess reviewing the overall concept in one place is probably good)

https://github.com/llvm/llvm-project/pull/74287