long messages should be concatanated and have a button to view all / there should be a setting to set how long messages to be viewed


#### Description

feature request.

limit message initally viewable length

maybe via a user setting

#### Steps to reproduce

go in https://matrix.to/#/!AUyclzjhyJPgZJeNkW:matrix.org/$nqqq6BDeF4obrpub4VmvZjaAbH-dT-pcogDpSLEajgM?via=matrix.org&via=libera.chat&via=t2bot.io

and check it for yourself (see the message that is many pages long)

there should be a concatanation and only view a long message if you click on a link (show more/all maybe)

#### Version information

Element version: 1.7.32

- **Platform**: web @ app.element.io

For the web app:

- **Browser**: Firefox, 89.0.1 (64-bit)
- **OS**: Windows
- **URL**: app.element.io