Find Include Rel Error

Fixed terragrunt find --include failing on relative include paths

Running terragrunt find --include against units whose include blocks reference parent configs with relative paths (../root.hcl, ./common.hcl, bare filenames, etc.) emitted errors like Rel: can't make ../root.hcl relative to /abs/working-dir and dropped those entries from the output.

Relative include paths are now resolved against the unit's directory before being made relative to the working directory, matching how the rest of Terragrunt interprets the path attribute on an include block.

find and list no longer hard-fail when a path cannot be made relative to its base. The condition is logged as a warning and the path is emitted as-is, so output stays complete and the command exits zero.