Auto merge of #13167 - ConnorGBrewster:reload_replace_current, r=asajeffrey

Replace current session entry when reloading

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This PR adds a replacement option when navigating. It replaces the current session history entry after a new page has been loaded. This will prevent reloading from adding a new entry to the session history.

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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 #13123 (github issue number if applicable).

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- [ ] These changes do not require tests because _____

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