Weekly Report - Improve Naming on Weekly report email

### Problem Statement

Currently when the weekly report gets in we show you the Errors accepted / dropped and Transactions accepted / dropped.
The naming dropped implies that you are dropping a lot while it actually displays Dropped + Filtered.

This can cause some unwanted reactions and causes the user to dive deeper into the numbers while everything is under control already

### Solution Brainstorm

Improve naming or split the dropped column into filtered + dropped.

### Product Area

Unknown

┆Issue is synchronized with this [Jira Improvement](https://getsentry.atlassian.net/browse/FEEDBACK-2068) by [Unito](https://www.unito.io)