[TabLayout] Indicator with tabIndicatorFullWidth=false does not match label if label is not centered

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**Description:**

I have this style
```

<item name="tabIndicatorFullWidth">false</item>
<item name="tabMode">scrollable</item>
<item name="tabPaddingStart">0dp</item>
<item name="tabPaddingEnd">16dp</item>
<item name="tabGravity">start</item>
<item name="tabContentStart">0dp</item>
<item name="tabMinWidth">0dp</item>

```

and it renders as this

**Expected behavior:**

Indicator should match label width

**Android API version:**
29

**Material Library version:**
1,3.0-alpha01

Start at the TabLayout entry point and reproduce the supplied style on Android API 29 with Material Library 1.3.0-alpha01, especially tabIndicatorFullWidth=false with a non-centered label. Compare the indicator and label widths using the configuration shown; done means the indicator matches the label width.

Written by the indexing model from the issue text.