Years do not show on Visualize page when very zoomed out

[atruskie]

Error caused on this line: https://github.com/QutBioacoustics/baw-client/blob/ae1daa6155429e07efff7cb3624e5d21e728830a/src/app/d3Bindings/widgets/customMultiDateFormat.js#L23

The way the multi time formats work, they escalate to the next case if the number returned is falsey. Because getDate will never be 0 the year style formatting is never reached.

Reported by @KarlinaInd