[BadgeDrawable] Color selector not being respected for badge background

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**Description:** Adding a color selector to the `badgeStyle` -> `backgroundColor` doesn't see to work as expected. Color doesn't change when Tab is selected.

**Expected behavior:** Badge color would respect color selector

**Source code:**

I've tried every single property I could find, and it didn't make a difference. Here's a sample example:

```

<item name="backgroundColor">@color/badge_bg</item>
<item name="badgeTextColor">@color/badge_text</item>

```

And `badge_bg` looks like this:

```

```

In this example, only `color_two` gets applied to the badge, even though following the same process the tab text changes accordingly.

**Android API version:** 12

**Material Library version:** 1.4.0

**Device:** Samsung S20 & Pixel 1

Start by reproducing the issue with BadgeDrawable, the StudioBadge style, and the badge_bg selector shown in the report on the stated Android and Material Library versions. Trace how badgeStyle backgroundColor is applied and verify that the badge changes from color_two to color_one when the tab is selected.

Written by the indexing model from the issue text.