Bug 1919183 - Disable browser_glean_sidebar.js on win/mac/linux x64 for frequent failures r=intermittent-reviewers,jmaher DONTBUILD

Differential Revision: https://phabricator.services.mozilla.com/D237862

Author: amarc-mozilla

browser/components/sidebar/tests/browser/browser.toml

@@ -19,6 +19,11 @@ skip-if = [
 ["browser_extensions_sidebar.js"]
 
 ["browser_glean_sidebar.js"]
+skip-if = [
+  "os == 'linux' && os_version == '18.04' && processor == 'x86_64'", # Bug 1919183
+  "os == 'mac' && os_version == '10.15' && processor == 'x86_64'", # Bug 1919183
+  "os == 'win' && os_version == '11.26100' && processor == 'x86_64'", # Bug 1919183
+]
 
 ["browser_hide_sidebar_on_popup.js"]