fix graphql errors for runs using int event metadata
We merged a rev that introduced EventMetadataEntry.int, but we have some checks against unknown metadata types in both the js layer and the python graphql layer
This adds the new checks, renames the value so there is not a type conflict, and makes sure the asset graphs are generated for both int/float values.
Test Plan: added new metadata graphql metadata check
Reviewed By: alangenfeld
Differential Revision: https://dagster.phacility.com/D4773