Strikethrough, quote, and mobile

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Client Version: 42.4 (1287)

OS: Android 10

Steps:

1. Write a text post (ex: my text)
2. Quote that post on the Desktop client.
3. Edit the post to include markdown for strikethrough. (ex: my ~~text~~)
4. Send.

Expected Behavior: See strikethrough text on all clients.

Actual behavior: See strikethrough text on desktop clients. See this on mobile: my ~~text ~~ (note the inserted space)