Color hex code in color picker displayed in RTL instead of LTR on RTL install (take 2)

[SergeyBiryukov]

Background: #23740

1. Switch to an RTL locale, e.g. Hebrew.
2. Switch to a theme that uses color picker in Customizer settings, e.g. Twenty Seventeen.
3. Click the Select Color button.
4. The hex value input box shows RRGGBB# instead of #RRGGBB.

This was fixed in [23777], however the changes were lost after switching to the new build process in [25001].

Thanks @vjik for noticing!

[SergeyBiryukov]

In 45626:

Customize: Fix text direction for color picker in RTL.

Props vjik for the report.
Fixes #47688. See #23740.

[JeffPaul]

Reopening this so it can be back-ported to the 5.2 branch, also needs testing to validate if this ticket is good to land in 5.2.3.

[SergeyBiryukov]

In 45830:

Customize: Fix text direction for color picker in RTL.

Props vjik, SergeyBiryukov.
Merges [45626] to the 5.2 branch.
Fixes #47688. See #23740.