Setting a store to null does not update auto-subscription references #7555
Description
Describe the bug
When a store is set to null, references to $store.value continue to hold the value from the store prior to being nulled out.
Reproduction
https://svelte.dev/repl/d1c48c88ac854c5d9245b739093538de?version=3.48.0
Logs
No response
System Info
System: OS: macOS 11.2.3 CPU: (16) x64 Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz Memory: 24.75 MB / 32.00 GB Shell: 5.0.18 - /usr/local/bin/bash Binaries: Node: 16.15.0 - ~/.nave/installed/16.15.0/bin/node Yarn: 1.22.17 - /usr/local/bin/yarn npm: 8.5.5 - ~/.nave/installed/16.15.0/bin/npm Browsers: Brave Browser: 98.1.35.101 Chrome: 101.0.4951.64 Firefox: 94.0.2 Safari: 14.0.3 npmPackages: svelte: ^3.46.6 => 3.46.6 webpack: ^4.44.2 => 4.44.2Severity
annoyance