* Revert "Do not register UI-related native functions in secondary isolates (#6401)" This reverts commit 69ae5694de54d2a163743dcec727fcea1c7bc8e1 as it doesn't work when root and secondary isolates run in the same isolate group. * Confirm it is root isolate that makes UI native calls. * Fix format, UIDartState reference from Fuchsia source * No UI isolate check for fuchsia calls * Fix typo. Remove redundant runtime calls
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