Don't change format in convertToLocalMomentTime

[bjarnef]

Prerequisites

• I have added steps to test this contribution in the description below

If there's an existing issue for this PR then this fixes #15202

Description

In #13500 it adjusted a few functions to allow specifying a known parsing format instead of just default parsing format YYYY-MM-DD HH:mm:ss.

However it also passed in format to convertToLocalMomentTime() here: https://github.com/umbraco/Umbraco-CMS/pull/13500/files#diff-277b13396c90722385a98d599dbfea84855ff088949d00d4b5d14259208ed034R111

which before always used YYYY-MM-DDTHH:mm:ss format. Now it passed in format from where getLocalDate() is called, e.g. LLL or MMM Do YYYY, HH:mm.
https://github.com/search?q=repo%3Aumbraco%2FUmbraco-CMS%20getLocalDate&type=code

[github-actions]

Hi there @bjarnef, thank you for this contribution! 👍

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[andr317c]

LGTM! 🚀