Update Product handbook: Remove "Bug review" ritual (#14720)

- Remove "Bug review" ritual in an effort to remove recurring meetings. 
- Head of Product Design (Noah) is the DRI of keeping the "Sprint
backlog" column in the bugs board prioritized. They'll get input from
EMs on priority async and during 1:1 calls.
- Add note about recording product KPI during "Pre-sprint
prioritization"
...

handbook/product/README.md

@@ -437,8 +437,7 @@ Directly Responsible Individuals (DRI) engage in the ritual(s) below at the freq
 | Maintenance | Weekly (Friday) | Head of Product Design checks the latest versions of relevant platforms, updates the maintenance tracker, and notifies the #help-product-design Slack channel. | Noah Talerman |
 | Quality check  | Daily         | Every day, Head of Product design will review the "Settled" column on the drafting board to ensure all product action items are complete.                                | Noah Talerman |
 | Product confirm and celebrate                 | Weekly (Wednesday)       | The Head of Product meets with the designers and product managers to discuss completed user stories. They also verify all updates to documentation, communications, guides, and the pricing and transparency pages, ensuring everything is set for the next steps.                                      | Noah Talerman            |
-| Pre-sprint prioritization          | Sprintly (Monday)        | The Head of Product Design and each group's EM meet before each sprint to align on priorities and note what wasn't completed in the previous sprint. Head of Product Design.                                                                                                                                                              | Noah Talerman            |
-| Bug review (#g-endpoint-ops)                               | Weekly (Tuesday)         | The Head of Product design meets with the engineering manager and a product quality engineer to ensure synchronization on bug prioritization and actions preceding Endpoint ops estimation sessions.                                                                                                         | Noah Talerman            |
+| Pre-sprint prioritization          | Sprintly (Monday)        | The Head of Product Design and each group's EM meet before each sprint to align on priorities and discuss what stories weren't completed in the previous sprint. Head of Product Design records number of stories that weren't completed in the "Stories dropped" product KPI.                                                                                                                                                              | Noah Talerman            |
 | Bug round-up   | Mid-sprint | Head of Product Design will compile a list of churned bugs, including issue numbers, specifics, and age. They will also notify the Customer Success team of any churned bugs that have customer tags  | Noah Talerman |
 | Churned bug review                            | Mid-sprint     | The Head of Product Design meets with the Head of Product Development to examine churned bugs and categorize them as either schedule, needs prioritization, or de-prioritize.                                                                    | Churned bug clean-up | Mid-sprint  | Following the churned bug review, Head of Product Design completes the churned bug clean-up, ensuring all necessary follow-up tasks are actioned to classify bugs as schedule, needs prioritization, or de-prioritized. This may include relocating bug tickets, adjusting labels, communicating with stakeholders, writing documentation, and closing issues. | Noah Talerman |                                                                 | Noah Talerman            |
 | Stand-up (#g-website)           | Daily (Monday - Thursday) | The website product team meets to discuss completed tasks, upcoming work, and address any questions. | Mike Thomas |