Revert "Always dispose test editor even if a test fails"
Revert "Always dispose test editor even if a test fails"

This reverts commit 7f17834a595c7f0977ff6407994a8e4f531cc920.

microsoft/vscode,microsoft/vscode,microsoft/vscode,microsoft/vscode,microsoft/vscode,microsoft/vscode,microsoft/vscode,microsoft/vscode,microsoft/vscode,microsoft/vscode,microsoft/vscode,microsoft/vscode,microsoft/vscode,microsoft/vscode,microsoft/vscode,microsoft/vscode,microsoft/vscode