chore(date_trunc): turn panic into unimplemented error for ambiguous time #9061
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Which issue does this PR close?
Part of #8899
Rationale for this change
date_truncpanics when time is ambiguous between "daylight saving time" and standard timeWhat changes are included in this PR?
Instead panic, return an "not yet implemented" error with workaround suggestion.
Are these changes tested?
Yes, included more tests
Are there any user-facing changes?
Yes, user will no longer get panic, but a clearer error with workaround suggestion