fix: float " " symbol in the preview_body

[DmytroAlipov]

Description

The issue is with the preview_body field when formatting the post body. If there are multiple consecutive spaces in the body of a post, the space character is replaced with  .

Before:

After:

<img width="1026" alt="screen_1" src="https://github.com/openedx/edx-platform/assets/98233552/33bca474-83f7-4685-b5ef-55324b73fe97"

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[mphilbrick211]

Hi @asadazam93! Would you, or someone from @openedx/edx-infinity, be able to review/merge this for us? Thanks!

[asadazam93]

@DmytroAlipov is there another PR to merge this fix in master?

[DmytroAlipov]

@asadazam93 yes, of course. here

[mphilbrick211]

Hi @openedx/edx-infinity! Is someone able to merge this for us? Thanks!

[mphilbrick211]

Hi @openedx/edx-infinity! Is someone able to merge this for us? Thanks!

Hi @openedx/edx-infinity! just following up on this :)

[mariajgrimaldi]

@mphilbrick211: I'm adding this PR to the BTR list of backports. I can merge it :)

[mphilbrick211]

@mphilbrick211: I'm adding this PR to the BTR list of backports. I can merge it :)

Thanks so much, @mariajgrimaldi!

[openedx-webhooks]

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