UX: freeze first column in submissions list; parse submission 'number of Units' data

[TimCsaky]

Description

Ticket: https://apps.nrs.gov.bc.ca/int/jira/browse/SHOWCASE-3512

• Freeze the first column in the list view screen.
• When pulling the Units field from SHAS into our list view, review all 3 fields and choose the one with the largest number.
• Rename "Intake status" to "Intake state"

Types of changes

New feature (non-breaking change which adds functionality)

Checklist

• I have read the CONTRIBUTING doc
• I have checked that unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

Further comments

[github-actions]

Coverage Report (Application)

Totals
Statements:	43.57% ( 61 / 140 )
Methods:	26.32% ( 5 / 19 )
Lines:	60.76% ( 48 / 79 )
Branches:	19.05% ( 8 / 42 )

[github-actions]

Coverage Report (Frontend)

Totals
Statements:	36.73% ( 184 / 501 )
Methods:	35.29% ( 36 / 102 )
Lines:	41.05% ( 117 / 285 )
Branches:	27.19% ( 31 / 114 )