tests(catalog): fix flake in TestListTrafficPolicies

[nojnhuh]

Description: Change TestListTrafficPolicies to not test order of returned elements.

Affected area:

• New Functionality [ ]
• Documentation [ ]
• Install [ ]
• Control Plane [ ]
• CLI Tool [ ]
• Certificate Management [ ]
• Networking [ ]
• Metrics [ ]
• SMI Policy [ ]
• Security [ ]
• Tests [X]
• CI System [ ]
• Performance [ ]
• Other [ ]

Please answer the following questions with yes/no.

• Does this change contain code from or inspired by another project? If so, did you notify the maintainers and provide attribution?
  No

[codecov-io]

Codecov Report

Merging #1808 into main will increase coverage by 11.13%.
The diff coverage is 52.50%.

@@             Coverage Diff             @@
##             main    #1808       +/-   ##
===========================================
+ Coverage   44.39%   55.52%   +11.13%     
===========================================
  Files         111      125       +14     
  Lines        4690     5163      +473     
===========================================
+ Hits         2082     2867      +785     
+ Misses       2608     2294      -314     
- Partials        0        2        +2     

Impacted Files	Coverage Δ
ci/cmd/maestro.go	8.04% <0.00%> (-2.67%)	⬇️
cmd/cli/dashboard.go	0.00% <ø> (ø)
cmd/cli/env.go	0.00% <0.00%> (ø)
cmd/cli/mesh.go	0.00% <0.00%> (ø)
cmd/cli/namespace.go	0.00% <0.00%> (ø)
cmd/cli/namespace_list.go	35.55% <0.00%> (-1.95%)	⬇️
cmd/cli/osm.go	0.00% <0.00%> (ø)
cmd/cli/version.go	0.00% <0.00%> (ø)
pkg/catalog/mock_catalog.go	0.00% <0.00%> (ø)
pkg/certificate/types.go	0.00% <ø> (ø)
... and 191 more

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