trending: Restore trending triggers
Restore the trending article triggers that were removed in 8c6643a2. The restored version expects to call a trending service hosted at https://wp-trending.toolforge.org.
Bug: T336273
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Restore the trending article triggers that were removed in 8c6643a2. The restored version expects to call a trending service hosted at https://wp-trending.toolforge.org.
Bug: T336273