Auto merge of #12376 - sappharx:master, r=ConnorGBrewster

add Runnable::name() implementation for PlannedNavigation #12333

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implements Runnable::name() for PlannedNavigation
---
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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 fix #12333 (github issue number if applicable).

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- [ ] There are tests for these changes OR
- [x] These changes do not require tests because the issue stated no tests were needed

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components/script/dom/htmlformelement.rs

@@ -936,6 +936,8 @@ struct PlannedNavigation {
 }
 
 impl Runnable for PlannedNavigation {
+    fn name(&self) -> &'static str { "PlannedNavigation" }
+
     fn handler(self: Box<PlannedNavigation>) {
         if self.generation_id == self.form.root().generation_id.get() {
             let script_chan = self.script_chan.clone();