e409f85154
This is follow up for https://github.com/llvm/llvm-project/pull/71902. The default option --continue-on-cu-index-overflow returned an error --continue-on-cu-index-overflow: missing argument. Changed it so that it is the same behavior as other flags like -gsplit-dwarf. Where --continue-on-cu-index-overflow will default to continue, and user can set mode with --continue-on-cu-index-overflow=\<value>.