fix(runtime-vapor): enable injection from VDOM parent to slotted vapor child

[edison1105]

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Size Report

Bundles

File	Size	Gzip	Brotli
compiler-dom.global.prod.js	85.2 kB	29.9 kB	26.4 kB
runtime-dom.global.prod.js	108 kB (+2 B)	40.5 kB	36.5 kB (+19 B)
vue.global.prod.js	166 kB (+2 B)	60.5 kB	53.9 kB (-18 B)

Usages

Name	Size	Gzip	Brotli
createApp (CAPI only)	48.2 kB (+2 B)	18.8 kB (+1 B)	17.2 kB (+3 B)
createApp	57.2 kB (+2 B)	22 kB (+2 B)	20.1 kB (+15 B)
createApp + vaporInteropPlugin	95.9 kB (+22 B)	35.4 kB (+13 B)	31.9 kB (+19 B)
createVaporApp	40.9 kB	15.2 kB	13.8 kB
createSSRApp	61.6 kB (+2 B)	23.8 kB (+1 B)	21.7 kB (+3 B)
defineCustomElement	63.3 kB (+2 B)	23.8 kB (+2 B)	21.7 kB (-3 B)
overall	71.9 kB (+2 B)	27.2 kB (+1 B)	24.8 kB (+4 B)

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commit: c4ba60c

[Copilot]

Pull request overview

This PR fixes injection context propagation by enabling slotted Vapor child components to properly inject values provided by their VDOM parent components. The fix ensures the parent component's context is active during slot mounting.

• Added parentComponent parameter to the slot method in the Vapor interop interface
• Set the current instance to the parent component during vapor slot mounting to establish proper injection context
• Added comprehensive test coverage for the VDOM parent to Vapor child injection scenario

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
packages/runtime-vapor/src/vdomInterop.ts	Sets current instance to parentComponent during slot mounting to enable proper injection context for slotted vapor children
packages/runtime-core/src/apiCreateApp.ts	Updated VaporInteropInterface.slot signature to include parentComponent parameter
packages/runtime-core/src/renderer.ts	Passed parentComponent argument when calling the slot method during VaporSlot processing
packages/runtime-vapor/tests/apiInject.spec.ts	Added test case verifying injection works from VDOM parent to slotted Vapor child, plus cleanup setup

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