[d&d hybrid] place holder for temporal column

[jinghua-qa]

place holder for temporal column should be 'Drop temporal column here or click'

Environment

(please complete the following information):

• superset version: latest master
• python version: python --version
• node.js version: node -v
• any feature flags active:

Checklist

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• I have checked the superset logs for python stacktraces and included it here as text if there are any.
• I have reproduced the issue with at least the latest released version of superset.
• I have checked the issue tracker for the same issue and I haven't found one similar.

Additional context

Add any other context about the problem here.

[junlincc]

right right, different versions of control panel should have different place holders. @kgabryje

[kgabryje]

apache-superset/superset-ui#1317

[rusackas]

Reopening since the superset-ui changes have not been brought over to superset yet. This will take place in #16350 which should close this issue once and for all.