Add a timezone offset display value to wp.date.setSettings

[afercia]

In ​https://github.com/WordPress/gutenberg/pull/56682 I'm proposing to add a timezone offset value for displaying purposes, to be used in the Gutenberg editor.

Right now, the editor is displaying the stored value which is a float number with decimals. For some timezone offsets, that displays incorrect values in the UI like 5:75 instead of 5:45.

There's already a couple places in Core where such a conversion is in place for displaying purposes:

• In ​the select element for the Timezone setting.
• In the customizer ​WP_Customize_Date_Time_Control class.

It would be a one line addition:

'offsetFormatted' => str_replace( array( '.25', '.5', '.75' ), array( ':15', ':30', ':45' ), (string) get_option( 'gmt_offset', 0 ),

[afercia]

​https://github.com/WordPress/gutenberg/pull/56682 has been merged in the Gutenberg repository. As such, those changes need to be ported to the Core wp.date.setSettings in the script-loader.php file. 60105.diff​ just does that.

[afercia]

As a follow-up to the changes in Gutenberg, a few translators comments have been improved in ​https://github.com/WordPress/gutenberg/pull/58488. It would be good to improve the ones in Core as well.

[get_dave]

@youknowriad this ticket is still outstanding.

Original Gutenberg PR lines

• ​https://github.com/WordPress/gutenberg/pull/56682/files#diff-97b486ce9cb61e829017b1b261ad7be2dd63d655e34cc48f7de2e38471e4b923R31
• ​https://github.com/WordPress/gutenberg/pull/56682/files#diff-97b486ce9cb61e829017b1b261ad7be2dd63d655e34cc48f7de2e38471e4b923R88

[afercia]

Replying to afercia:

As a follow-up to the changes in Gutenberg, a few translators comments have been improved in ​https://github.com/WordPress/gutenberg/pull/58488. It would be good to improve the ones in Core as well.

Oh I see the translators comments are already tracked at #60412

[youknowriad]

In 57556:

Script Loader: Add a timezone offset display value to wp.date.setSettings.

Fixes a bug in the editor where the offset values are displayed as decimals rather than minutes.

Props afercia, get_dave.
Fixes #60105.