Make RTE text formatting box the default

### Your use case

#### What would you like to do?
Make text formatting box in RTE the default

#### Why would you like to do it?
It's confusing that you have to enable the rich text editor, then tap the + and then Text formatting to bring up the rich text editor.

#### How would you like to achieve it?
Remove option from the + menu and make it the default chat experience.

### Have you considered any alternatives?

_No response_

### Additional context

_No response_

### Are you willing to provide a PR?

No

No implementation files or tests are named in the issue. Start by locating the Element client rich text editor settings and the + menu entry for text formatting, then trace how the chat composer chooses its default experience. Done means the formatting box opens by default when RTE is enabled and is no longer offered as a separate + menu option.

Written by the indexing model from the issue text.