Input command should not be auto-corrected (#7424)

[NicolasBuquet]

Fix #7424

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Signed-off-by: Nicolas Buquet nicolas.buquet@beta.gouv.fr

[aringenbach]

I think the issue with that code is that it will only avoid triggering that last auto-correction that happens upon sending the message, and it will still still trigger upon typing.
I suppose we could do something similar that what the RTE does if it works: https://github.com/matrix-org/matrix-rich-text-editor/blob/main/platforms/ios/lib/WysiwygComposer/Sources/WysiwygComposer/Extensions/UITextView.swift

(triggered when the text changes, so we could evaluate that at the same moment we evaluate for mentions text trigger)

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