test(db): flaky issue variant test

[MR2011]

# task can be: feat, chore, refactor, or research.

Task Description

Make secondary name more unique:

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• [FAILED] [1.503 seconds]
ServiceIssueVariant -  when Getting ServiceIssueVariants and filtering for component instances [It] 1 of 1 component instance, with 100 issues [database, IssueVariant, GetServiceIssueVariants]
/home/runner/work/heureka/heureka/internal/database/mariadb/service_issue_variant_test.go:178

  [FAILED] Expected
      <*mysql.MySQLError | 0xc001215068>: 
      Error 1062 (23000): Duplicate entry 'VMSA-0-1994-8367' for key 'issuevariant_secondary_name_UNIQUE'
      {
          Number: 1062,
          SQLState: [50, 51, 48, 48, 48],
          Message: "Duplicate entry 'VMSA-0-1994-8367' for key 'issuevariant_secondary_name_UNIQUE'",
      }
  to be nil
  In [It] at: /home/runner/work/heureka/heureka/internal/database/mariadb/service_issue_variant_test.go:126 @ 12/16/24 01:20:44.019
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