devops: do a full browser checkout by default on Dev machines (#6411)
devops: do a full browser checkout by default on Dev machines (#6411)

The `git fetch --unshallow` is a non-trivial command to run, so we
should default to a full checkout unless we're on CI.
microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright