fix: reset dependency read versions after reaction execution

packages/svelte/src/internal/client/runtime.js

@@ -429,7 +429,11 @@ export function update_reaction(reaction) {
 				if (!skip_reaction) {
 					(dep.reactions ??= []).push(reaction);
 				}
-				// Reset read version back to 0
+				// Reset read version back to 0, otherwise if we are
+				// returning to an existing reaction from before then
+				// and it uses this depedency too then it will be the
+				// same read version as the current global read version
+				// and not correctly be added as a dependency
 				dep.rv = 0;
 			}
 		} else if (deps !== null && skipped_deps < deps.length) {