allow replacement of invalid variants in TextEditWrapper

[stev-0]

Description

Post merge of #30758 I noticed some odd behaviour with editing JSON fields - upon entering an invaliid JSON field, the invalid text persisted in the Text Edit when changing records. This was caused by #33660 which overlapped the original PR. This PR attempts to return to the old behaviour without affecting the fix in #33660

@troopa81 would be good to check this will not affect what you were doing

[stale]

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[troopa81]

@troopa81 would be good to check this will not affect what you were doing

Sorry to answer so lately. the idea of my fix IIRC was to prevent the modification of the line edit if the value hasn't change so I think your modification should be fine,

[stev-0]

This already seems to be fixed in #34292