[Security Solution] [Bug] Error displayed on editing the filter controls on alert page in custom space when no rule is installed or no custom rule is added.

[chetnarajput-qasource]

Describe the bug:
This undefined error displayed on editing filter controls on alert page of kibana custom space, user have not installed any rule or added any custom rule.

Kibana/Elasticsearch Stack version:
VERSION: 8.18.0
BUILD: 82701
COMMIT: 9df464f

Browser and Browser OS versions:
Google Chrome Version 134.0.6998.89 (Official Build) (64-bit)

Pre Conditions:

1. Kibana v8.18.0 must be available.
2. A custom space should be created.
3. No rule should be installed and no custom rule should be added.

Steps to reproduce:

1. Go to Alerts page.
2. Click on three dots > 'Edit Controls' option.
3. Click on pencil icon to edit Users field or Severity field.
4. Observe the undefined error displayed and list of controls is not loading.

Current behavior:
Error displayed on editing the filter controls on alert page in custom space when no rule is installed or no custom rule is added.

Expected behavior:
The error should be defined to update the user to install rules or add custom rules

What's working:
User is able to edit the filter controls on alert page when rules are available.

Screenshots:

Screen Recording

BUG214717.mp4

[elasticmachine]

Pinging @elastic/security-solution (Team: SecuritySolution)

[chetnarajput-qasource]

@muskangulati-qasource Please review this ticket.

[elasticmachine]

Pinging @elastic/security-threat-hunting (Team:Threat Hunting)

[elasticmachine]

Pinging @elastic/security-threat-hunting-investigations (Team:Threat Hunting:Investigations)

[MadameSheema]

@chetnarajput-qasource can you please attach a video recording? Thanks!