[NAB-375] Variables with no init values referenced in arcs will cause arcs not to load

[camperko]

Description

Arcs which referenced data has non positive integer value will be displayed/represented with value 0 in edit + simulation mode

Fixes NAB-375

Dependencies

No new dependencies were introduced

Third party dependencies

No new dependencies were introduced

Blocking Pull requests

Blocking by PF-79

How Has Been This Tested?

Manually tested in local dev env in running application

Name	Tested on
OS	Linux Mint 21
Runtime	Node 20.13.1
Dependency Manager	npm 10.8.0
Framework version	Angular 13.3.1
Run parameters
Other configuration

Checklist:

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