[7.11] [Transform] Show destination index mapping warning for the latest transform (#87858)#87999

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darnautov merged 1 commit intoelastic:7.11from darnautov:backport/7.11/pr-87858

Jan 12, 2021

+30-4

Commits on Jan 12, 2021

[Transform] Show destination index mapping warning for the latest transform (elastic#87858 )
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