Declared styleable attributes not accounted for

[ZacSweers]

Build scan link

Plugin version

1.1.0

Gradle version

7.4.2

(Optional) Android Gradle Plugin (AGP) version

7.1.3

Describe the bug

Consider this styleable declaration from androidx.swiperefreshlayout

https://cs.android.com/androidx/platform/frameworks/support/+/androidx-main:swiperefreshlayout/swiperefreshlayout/src/main/res-public/values/attrs.xml;l=19

I found a case where a library depends on this library and defines a value for this attribute like so

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="Theme.SlackKit.NoActionBar" parent="@style/Theme.MaterialComponents.DayNight.NoActionBar.Bridge">
        ...
        <item name="swipeRefreshLayoutProgressSpinnerBackgroundColor">?android:attr/colorBackground</item>
    </style>
</resources>

DAGP misses this usage and removes the library as unused

To Reproduce
Steps to reproduce the behavior:
See above

Expected behavior

I'd expect it to properly detect this

Additional context

[autonomousapps]

@ZacSweers is the only connection between this consumer and the swipe refresh layout library that the library has a public attr type named "swipeRefreshLayoutProgressSpinnerBackgroundColor" and the consumer defines a value for an item with that same name? In other words, is this just a matter of string matching?

I should note that the plugin already understands that the library defines this attr. In other contexts, it can already detect that this attr is used by a consumer. It's a peculariaty of the custom matching algorithm that it currently misses this usage. So what I'm after is a deeper understanding of how to do this matching to accurately detect more usages. (see link for kdoc explaining current algo.)