Actual column in test results is hidden behind test list when test results tab is on the right side

[FMorschel]

Does this issue occur when all extensions are disabled?: Yes

• VS Code Version: 1.101.0
• OS Version: Windows 11 Pro

Steps to Reproduce:

1. Run a failing test with the Test Results tab on the right side of the screen
2. See the Expected column but not the Actual column if the list of test results takes too much space horizontally.

By simply clicking on the resize bar in the middle, the content becomes readable.

[FMorschel]

CC @connor4312