Auto merge of #25642 - pshaughn:requestintegrity, r=jdm

Send request's integrity metadata via RequestBuilder

RequestBuilder wasn't reinflating integrity_metadata along with other request fields, so main_fetch never saw that an integrity checksum was requested. Integrity checking seems to have otherwise been working; with this change, the entire WPT test for it passes (other than the SharedWorker test, which would probably pass if we had SharedWorker)

---
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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 #24906

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- [X] There are tests for these changes

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components/script/fetch.rs

@@ -123,7 +123,7 @@ fn request_init_from_request(request: NetTraitsRequest) -> RequestBuilder {
         referrer_policy: request.referrer_policy,
         pipeline_id: request.pipeline_id,
         redirect_mode: request.redirect_mode,
-        integrity_metadata: "".to_owned(),
+        integrity_metadata: request.integrity_metadata.clone(),
         url_list: vec![],
         parser_metadata: request.parser_metadata,
         initiator: request.initiator,

tests/wpt/metadata/fetch/api/basic/integrity.sub.any.js.ini

@@ -1,42 +1,2 @@
 [integrity.sub.any.sharedworker.html]
   expected: ERROR
-  [Untitled]
-    expected: FAIL
-
-  [integrity]
-    expected: FAIL
-
-
-[integrity.sub.any.worker.html]
-  [Invalid integrity]
-    expected: FAIL
-
-  [Multiple integrities: invalid stronger than valid]
-    expected: FAIL
-
-  [Multiple integrities: both are invalid]
-    expected: FAIL
-
-  [CORS invalid integrity]
-    expected: FAIL
-
-  [SHA-* integrity for opaque response]
-    expected: FAIL
-
-
-[integrity.sub.any.html]
-  [Invalid integrity]
-    expected: FAIL
-
-  [Multiple integrities: invalid stronger than valid]
-    expected: FAIL
-
-  [Multiple integrities: both are invalid]
-    expected: FAIL
-
-  [CORS invalid integrity]
-    expected: FAIL
-
-  [SHA-* integrity for opaque response]
-    expected: FAIL
-