Set default density to 1.25

Lower the default density to avoid ugly visual artifacts.

On Pico and Quest 2, pages and images with very thin lines
cause distortions and Moiré patterns when the density is too high.
Lowering the density eliminates these effects.

app/build.gradle

@@ -122,7 +122,7 @@ android {
         buildConfigField "Boolean", "FXA_USE_CHINA_SERVER", "false"
         buildConfigField "String[]", "SPEECH_SERVICES", "{ com.igalia.wolvic.speech.SpeechServices.MEETKAI }"
         buildConfigField "Boolean", "SUPPORTS_SYSTEM_NOTIFICATIONS", "false"
-        buildConfigField "Float", "DEFAULT_DENSITY", "1.5f"
+        buildConfigField "Float", "DEFAULT_DENSITY", "1.25f"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         resValue 'string', 'HOMEPAGE_URL', "https://wolvic.com/start"
         externalNativeBuild {