android: fix various places still using default Material Teal #3555
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Some places on Android are currently using the default Material Teal color, including the TextInput cursor, TextInput selection, and the spinner (ActivityIndicator) --- it's quite out of place whenever it shows up.
This PR sets Expo's primaryColor to #1083fe (which is the color that defaultTheme.palette.default.brandText resolves to), then applies it as the native accent color via a plugin (because Expo doesn't apply the accent color).
Comparison:
The
plugins/withAndroidStylesAccentColorPlugin.js
plugin is copied and modified fromplugins/withAndroidStylesWindowBackgroundPlugin.js
since that appears to be the idiomatic way of modifying Android'sres/values/styles.xml
.