Add clock packages to WPP plugin allow-list

Bug: 452444149
Flag: NONE - Bugfix
Test: Manually checked clocks showed up in WPP
Cherrypick-From: https://googleplex-android-review.googlesource.com/q/commit:753e197493397b76b8bec09712069a76d847d1aa
Merged-In: I207605b8c0f3a459b8c89c7605261ab5d4ed2f8e
Change-Id: I207605b8c0f3a459b8c89c7605261ab5d4ed2f8e