Auto merge of #22335 - asajeffrey:magicleap-duckduckgo, r=jdm

Change ML search engine to duckduckgo

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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes do not require tests because we don't test default search engine

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ports/libmlservo/src/lib.rs

@@ -311,7 +311,7 @@ pub unsafe extern "C" fn navigate_servo(servo: *mut ServoInstance, text: *const
             .to_str()
             .expect("Failed to convert text to UTF-8");
         let url = ServoUrl::parse(text).unwrap_or_else(|_| {
-            let mut search = ServoUrl::parse("http://google.com/search")
+            let mut search = ServoUrl::parse("https://duckduckgo.com")
                 .expect("Failed to parse search URL")
                 .into_url();
             search.query_pairs_mut().append_pair("q", text);