fix: slashes in destinationtype raise cypher error

[nocyphr]

Description

llm generated destinationtype with slashes (eg Software/Model)
This raises an error because neo4j cypher does not allow slashes in entity names.
Extended the existing sanitizing method (replace spaces) to include replacing / with : and renamed it to _remove_invalid_chars_from_entities to reflect the more general functionality.
using : in cyphr allows us to define more than one label (which is pretty much what the llm was trying to do)
Fixes # (issue)
I did not report the issue, I just went and fixed it.

Type of change

Please delete options that are not relevant.

• Breaking change (fix or feature that would cause existing functionality to not work as expected)

How Has This Been Tested?

• Unit Test

Checklist:

• My code follows the style guidelines of this project (precommit)
• [x ] I have performed a self-review of my own code (it's just one line and a rename, i considered refactoring it to just use re.sub instead and define more than one char but decided to skip it for now)
• My changes generate no new warnings
• New and existing unit tests pass locally with my changes

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Name	Status	Preview	Comments	Updated (UTC)
multimodal-demo	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Mar 13, 2025 11:56am

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[nocyphr]

had to adjust the entity_type_map as well to avoid "/" from sneaking into the labels

[nocyphr]

@taranjeet @Dev-Khant any way to get this reviewed? I hotfixed it in my deployment but I would prefer to not have to redo it on each docker redeployment 😄