UI variable fonts do not have "UI" in family name

[Mathnerd314]

Font

• ./unhinted/variable-ttf/NotoSansKannadaUI-VF.ttf
• ./unhinted/variable-ttf/NotoSansMalayalamUI-VF.ttf
• ./unhinted/variable-ttf/NotoSansSinhalaUI-VF.ttf
• ./unhinted/variable-ttf/NotoSansTamilUI-VF.ttf
• ./unhinted/variable-ttf/NotoSansTeluguUI-VF.ttf

Where the font came from, and when

Checkout of latest commit (notofonts/noto-fonts@4d7396a)

Steps to reproduce

fc-scan ./unhinted/slim-variable-ttf/NotoSansKannada-VF.ttf ./unhinted/slim-variable-ttf/NotoSansKannadaUI-VF.ttf ./hinted/ttf/NotoSansKannadaUI/NotoSansKannadaUI-Regular.ttf and similarly for the other fonts

Observed results

The Kannada UI VF has the same font family name "Noto Sans Kannada" as the main VF. This differs from the corresponding TTF/OTF name "Noto Sans Kannada UI"

Expected results

The UI VF should be a replacement for the UI TTF's/OTF's and have "UI" in the name.

Additional question

What are unhinted/slim-variable-ttf/NotoSansTamil-android-VF.ttf, unhinted/variable-ttf/NotoSansTamil-android-VF.ttf, and unhinted/variable-ttf/NotoSansTamilUI-VF-torecover.ttf, added in 502a98efbfe729861f95a34380e330e61f28c298?