fix(evaluation): replace bare raises with proper exceptions and add text_generation_quality request

[zamal-db]

Description

I was running SharpnessMetric on outputs from a custom diffusion pipeline and got hit with RuntimeError: No active exception to reraise. Took me a while to figure out what was going on since the actual issue was a tensor shape mismatch, but the bare raise on this line was masking the real error. The descriptive message was being logged via pruna_logger.error() right above it, but the raise itself had no exception attached.

Checked the rest of the evaluation metrics and found 3 more of the same pattern across 2 other files. Fixed all 4, also caught a small typo in registry.py while I was in there.

Separately, I noticed Task only supports image_generation_quality as a named request. Added text_generation_quality since perplexity is already available through TorchMetricWrapper and it felt like a natural complement.

Changes

Bug fixes (4 bare raises):

• metric_sharpness.py: 2x bare raise replaced with raise ValueError(...) for wrong tensor dimensions and unsupported channel count
• metric_dino_score.py: bare raise replaced with raise ValueError(...) for unsupported device
• metric_memory.py: bare raise replaced with raise RuntimeError(...) for multi-GPU without device map

Typo fix:

• registry.py: "dos not inherit" fixed to "does not inherit"

Feature:

• Add text_generation_quality named evaluation request to Task, returning a perplexity metric to complement the existing image_generation_quality request

Related Issue

N/A

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

• Verified all 4 bare-raise paths produce RuntimeError: No active exception to reraise before the fix, and raise the correct typed exception with descriptive message after
• Added test_task_text_generation_quality_request to verify the named request returns a perplexity TorchMetricWrapper
• Added test_task_invalid_named_request to verify unknown requests raise ValueError
• Ran ruff check on all modified source files, all pass

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

Additional Notes

None