Use safevalues to fix trusted types issues reported by tsec

[dlarocque]

This fixes all but two errors reported by yarn trusted-type-check, by using https://github.com/google/safevalues. The other error fixes won't be included in this PR since they require some refactoring.

In Analytics, we already used TrustedTypes, but tsec reports an error saying that it does not allow this without a security review. So, the usage of TrustedTypes has been replaced with safevalues.

Please ignore the stray rules-unit-testing/functions/yarn.lock change, it will go away once #8298 is merged