test: fix playwright UI tests

[Dugowitch]

Description

Associated Jira ticket: # (issue)

• small test fixes
• improve test stability
• switch patch Systems pages to use InventoryTable's built-in filter by name

How to test the PR

Please include steps to test your PR.

Before the change

After the change

Dependent work link

Checklist:

• The commit message has the Jira ticket linked
• PR has a short description
• Screenshots before and after the change are added
• Tests for the changes have been added
• README.md is updated if necessary
• Needs additional dependent work

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.38%. Comparing base (0efdadd) to head (5df2384).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1785      +/-   ##
==========================================
- Coverage   77.38%   77.38%   -0.01%     
==========================================
  Files         102      102              
  Lines        3299     3298       -1     
  Branches      757      758       +1     
==========================================
- Hits         2553     2552       -1     
  Misses        667      667              
  Partials       79       79              

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