disable NSFW checker loading during the CI tests (#1641)

* disable NSFW checker loading during the CI tests

The NSFW filter apparently causes invoke.py to crash during CI testing,
possibly due to out of memory errors. This workaround disables NSFW
model loading.

* doc change

* fix formatting errors in yml files

.github/workflows/test-invoke-conda.yml

@@ -115,6 +115,7 @@ jobs:
         run: |
           time python scripts/invoke.py \
             --no-patchmatch \
+            --no-nsfw_checker \
             --model ${{ matrix.stable-diffusion-model }} \
             --from_file ${{ env.TEST_PROMPTS }} \
             --root="${{ env.INVOKEAI_ROOT }}" \

.github/workflows/test-invoke-pip.yml

@@ -114,6 +114,7 @@ jobs:
         run: |
           time ${{ env.pythonLocation }}/bin/python scripts/invoke.py \
             --no-patchmatch \
+            --no-nsfw_checker \
             --model ${{ matrix.stable-diffusion-model }} \
             --from_file ${{ env.TEST_PROMPTS }} \
             --root="${{ env.INVOKEAI_ROOT }}" \

ldm/invoke/args.py

@@ -463,9 +463,12 @@ class Args(object):
             default='auto',
         )
         model_group.add_argument(
+            '--nsfw_checker'
             '--safety_checker',
-            action='store_true',
-            help='Check for and blur potentially NSFW images',
+            action=argparse.BooleanOptionalAction,
+            dest='safety_checker',
+            default=False,
+            help='Check for and blur potentially NSFW images.',
         )
         model_group.add_argument(
             '--patchmatch',