feat: Pause message on Python API 2.19 only allows ~216 characters

[MSMDG]

Overview

I've found that the pause(self, msg: 'Optional[str]' = None) on API 2.19 only fits ~216 characters which is not enough to communicate with the user while a protocol is running. This leads in having multiple clumps of pause messages.

Implementation details

My suggestion would be to increase the character limit to at least 500.
In addition, it would be nice if we could choose when to use a new line such as with '\n', so that the message does not seem busy or convoluted.

Design

No response

Acceptance criteria

No response