Extension causes high cpu load

[ghost]

• Issue Type: Performance
• Extension Name: salesforcedx-vscode-core
• Extension Version: 45.8.0
• OS Version: Linux x64 4.15.0-46-generic
• VSCode version: 1.32.3

⚠️ Make sure to attach this file from your home-directory: /home/sc/salesforce.salesforcedx-vscode-core-unresponsive.cpuprofile.txt ⚠️

Find more details here: https://github.com/Microsoft/vscode/wiki/Explain:-extension-causes-high-cpu-load

[smaddox-sf]

Duplicate #1149

[git2gus]

This issue has been linked to a new work item: W-7776883