`open_stream()` allows control characters through the stream that affect the full output

[lengau]

Bug Description

If you're using a stream from the emitter, it can send through control characters. This is mostly fine, except that these control characters can change (for example) the colour of the text output to the full system, and we never reset this.

To Reproduce

Open a stream, send a control character (e.g. changing the text colour, 0;30) to the stream, and then close the stream and print something else out.

part yaml

Relevant log output

n/a

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The internal ticket has been created: https://warthogs.atlassian.net/browse/CRAFT-5000.

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