feat(db): handle PIL errors opening images gracefully (#5314)

## What type of PR is this? (check all applicable)

- [ ] Refactor
- [ ] Feature
- [x] Bug Fix
- [ ] Optimization
- [ ] Documentation Update
- [ ] Community Node Submission


## Have you discussed this change with the InvokeAI team?
- [x] Yes
- [ ] No, because:

## Description

For example, if PIL tries to open a *really* big image, it will raise an
exception to prevent reading a huge object into memory.

## Related Tickets & Documents

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-
https://discord.com/channels/1020123559063990373/1149513695567810630/1186200089149046804

## QA Instructions, Screenshots, Recordings

This should fix the error in the discord thread

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## Merge Plan

Can be merged when @Millu confirms it fixes the issue he ran into

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Author: Millu

invokeai/app/services/shared/sqlite_migrator/migrations/migration_2.py

@@ -167,6 +167,9 @@ def _migrate_embedded_workflows(self, cursor: sqlite3.Cursor) -> None:
             except ImageFileNotFoundException:
                 self._logger.warning(f"Image {image_name} not found, skipping")
                 continue
+            except Exception as e:
+                self._logger.warning(f"Error while checking image {image_name}, skipping: {e}")
+                continue
             if "invokeai_workflow" in pil_image.info:
                 try:
                     UnsafeWorkflowWithVersionValidator.validate_json(pil_image.info.get("invokeai_workflow", ""))