Signal-android: [i18n] Strings related to disappearing message time

[RiseT]

I have:

• [x] searched open and closed issues for duplicates
• [x] read https://github.com/WhisperSystems/Signal-Android/wiki/Submitting-useful-bug-reports

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Bug description

Here's another one I've found on Transifex in the comments section. The comment below has been made on the first string only, but I guess the two other strings should be affected as well.

I agree that systematically, placeholders within a sentence that can represent both, numbers and words, are probably not the best idea, as they can lead to trouble in many languages.

Strings:
Key: MessageRecord_you_set_disappearing_message_time_to_s
Content: "You set disappearing message time to 1%1$s."

Key: MessageRecord_s_set_disappearing_message_time_to_s
Content: "1%1$s set disappearing message time to 2%2$s."

Key: ThreadRecord_disappearing_message_time_updated_to_s
Content: "Disappearing message time set to 1%s"

Translator's comment:
"With the most natural translation for the times, this string looks very odd when turning the time off, reads like "You set messages to disappear after Off" – could we please have two separate strings? One for Off and one for some specific time?"

[cascheberg]

@greyson-signal I just rebased PR #7734 which will fix this issue.