Revert " Bug 1055972 - disable keyboard uninstallation test."

This reverts commit e276b38a14e89c8b5bb36052f475d37716656d2a.
Bug 1056245 - Adjusting height of rocketbar search results when SHB is enabled
Bug 1056156 - [System] Update AppInstall uninstall method r=fabrice
Merge pull request #23099 from KevinGrandon/bug_1056156_fix_system_app_install

Bug 1056156 - [System] Update AppInstall uninstall method
Merge pull request #23104 from eliperelman/bug-1056245

Bug 1056245 - Adjusting height of rocketbar search results when SHB is enabled