IssueTracker

Discovered while fixing b/213256139.

The manifest can have queries such as:

    <queries>
        <intent>
            <action android:name="android.intent.action.VIEW" />
            <data android:scheme="https" />

        </intent>

According to documentation, this <intent> must have exactly one <action> element.

With commit a510ab2, the <action> element is marked as @Required and an error is shown when it is missing. But there is no error if multiple <action> tags are added.