Render Ignore Signals Panic

terragrunt render no longer crashes on multiple errors.ignore blocks with mismatched signals

Rendering a config that defined more than one errors.ignore block crashed with an inconsistent list element types panic when the signals map was populated on one block and absent (or differently typed) on another. The same crash showed up in dependency-output evaluation, since both paths build the same rendered representation of the config.

Each ignore block is now rendered with a uniform shape. Indexed access (errors.ignore[0]), length, and iteration still work, and the signals map on each block is preserved as written.