[TS] Fix: bit_flags default values does not exist

[tira-misu]

New TS seams to be a bit more restrictive with enum values. Most variables of an enum values are defaulted to 0. But in case of bit_flags value 0 is not defined as an enum value. So the typescript raises an error.

This fix defines an "_None" enum value with value 0 in case of bit_flags enums.

[github-actions[bot]]

This pull request is stale because it has been open 6 months with no activity. Please comment or label not-stale, or this will be closed in 14 days.

[github-actions[bot]]

This pull request was automatically closed due to no activity for 6 months plus the 14 day notice period.