fix(vue-router): invoke beforeRouteEnter next() callbacks with component instance

[ShaneK]

Issue number: resolves #25013

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What is the current behavior?

A beforeRouteEnter(to, from, next) guard that calls next((vm) => vm.member = 5) never runs the callback. Vue Router's <router-view> invokes whatever ends up in matchedRoute.enterCallbacks[name] from a post-flush watcher once the view's instance is set, but IonRouterOutlet does its own rendering and skips that step. matchedRoute.instances.default gets populated in registerIonPage, so internal guards still fire, but the queued enter callbacks sit there unused

What is the new behavior?

createViewStacks's registerIonPage now reads matchedRoute.enterCallbacks.default, resets it, and runs each callback with the resolved instance. The reset happens before invocation so a callback that triggers a synchronous navigation can push fresh entries onto the next matched record without getting wiped. There's a new Vitest case in routing.spec.ts that navigates into a page whose beforeRouteEnter does next((vm) => { vm.member = 5 }) and asserts both the callback ran with the instance and the mutation reached the DOM

Does this introduce a breaking change?

• Yes
• No

Other information

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Project	Deployment	Actions	Updated (UTC)
ionic-framework	Ready	Preview, Comment	May 15, 2026 4:15pm

[thetaPC]

LGTM