[lld] [LLD] [COFF] Print a warning when using /dependentloadflag without load config (PR #117400)

[Mateusz Mikuła via llvm-commits]

mati865 wrote:

Noticed `lld-link: warning: '_load_config_used' is misaligned (expected alignment to be 8 bytes, got 1 instead)` warning that was already present. Is it something that should be taken care of?

https://github.com/llvm/llvm-project/pull/117400