Auto merge of #22121 - gterzian:remove_constellation_block_in_navigation, r=paulrouget

Remove sync constellation -> embedder communication

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- [ ] `./mach build -d` does not report any errors
- [ ] `./mach test-tidy` does not report any errors
- [ ] These changes fix #22042 (github issue number if applicable).

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- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because _____

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tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/008.html.ini

@@ -1,5 +0,0 @@
-[008.html]
-  type: testharness
-  [Link with onclick form submit to javascript url and href navigation ]
-    expected: FAIL
-

tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/009.html.ini

@@ -1,5 +0,0 @@
-[009.html]
-  type: testharness
-  [Link with onclick form submit to javascript url with document.write and href navigation ]
-    expected: FAIL
-