Auto merge of #14784 - mattnenterprise:fetch-api-updates, r=jdm,KiChjang

Updating http_network_or_cache_fetch to better match the fetch API spec

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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 #14742

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- [x] There are tests for these changes

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tests/wpt/metadata/XMLHttpRequest/send-entity-body-empty.htm.ini

@@ -1,5 +0,0 @@
-[send-entity-body-empty.htm]
-  type: testharness
-  [XMLHttpRequest: send("") - empty entity body (HEAD)]
-    expected: FAIL
-

tests/wpt/metadata/XMLHttpRequest/send-entity-body-get-head.htm.ini

@@ -1,5 +0,0 @@
-[send-entity-body-get-head.htm]
-  type: testharness
-  [XMLHttpRequest: send() - non-empty data argument and GET/HEAD (HEAD)]
-    expected: FAIL
-

tests/wpt/metadata/XMLHttpRequest/send-entity-body-none.htm.ini

@@ -1,8 +0,0 @@
-[send-entity-body-none.htm]
-  type: testharness
-  [No content type (HEAD)]
-    expected: FAIL
-
-  [Explicit content type (HEAD)]
-    expected: FAIL
-

tests/wpt/metadata/eventsource/request-cache-control.htm.ini

@@ -1,9 +1,5 @@
 [request-cache-control.htm]
   type: testharness
   expected: TIMEOUT
-  [EventSource: Cache-Control]
-    expected: TIMEOUT
-
   [EventSource: Cache-Control 1]
     expected: TIMEOUT
-